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# Output Messenger vs Slack Comparison - What are their main differences?

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Output MessengerSlack[+ Add Product](#)

Pricing

**Output Messenger**
 **$30** · Annual license

**Slack**
Free Trial

**$0.00** · Free

**Pricing Insights**
from reviews

Time to Implement

**Output Messenger**
Not enough reviews yet

**Slack**
1 month

Based on 2309 responses

Return on Investment

**Output Messenger**
Not enough reviews yet

**Slack**
9 months

Based on 1752 responses

Perceived Cost

**Output Messenger**
Not enough reviews yet

**Slack**
$$$$$

Average Discount

**Output Messenger**
Not enough reviews yet

**Slack**
11%

**Pros & Cons**
from reviews

**Output Messenger**
[
Communication (2)
](https://www.g2.com/products/output-messenger/reviews?filters%5Bsentiment_snippet%5D=2348672&qs=pros-and-cons#reviews)[
Customization (1)
](https://www.g2.com/products/output-messenger/reviews?filters%5Bsentiment_snippet%5D=2348674&qs=pros-and-cons#reviews)[
Missing Features (1)
](https://www.g2.com/products/output-messenger/reviews?filters%5Bsentiment_snippet%5D=2467723&qs=pros-and-cons#reviews)[
Performance Issues (1)
](https://www.g2.com/products/output-messenger/reviews?filters%5Bsentiment_snippet%5D=2348671&qs=pros-and-cons#reviews)

**Slack**
[
Ease of Use (3620)
](https://www.g2.com/products/slack/reviews?filters%5Bsentiment_snippet%5D=1336921&qs=pros-and-cons#reviews)[
Team Collaboration (3150)
](https://www.g2.com/products/slack/reviews?filters%5Bsentiment_snippet%5D=1333079&qs=pros-and-cons#reviews)[
Notification Issues (1137)
](https://www.g2.com/products/slack/reviews?filters%5Bsentiment_snippet%5D=1333540&qs=pros-and-cons#reviews)[
Missing Features (941)
](https://www.g2.com/products/slack/reviews?filters%5Bsentiment_snippet%5D=1337521&qs=pros-and-cons#reviews)

Integrations

**Output Messenger**
[

 ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_f6ee5c9dddbf5c28b136829c8782ed1b/slack.png "Product Avatar Image")

Slack

](https://www.g2.com/products/slack/reviews)[
View all
](https://www.g2.com/products/output-messenger/integrations)

**Slack**
[

 ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_191cf8675c238b8d02477dd26a655daf/15five.png "Product Avatar Image")

15Five

](https://www.g2.com/products/15five/reviews)[

 ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_f701c2bc8e8128a9090458644727a7a4/3cx.jpg "Product Avatar Image")

3CX

](https://www.g2.com/products/3cx/reviews)[

 ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_6ff31fc1a6707f7244205cf3200b7c25/accessowl.png "Product Avatar Image")

AccessOwl

](https://www.g2.com/products/accessowl/reviews)[

 ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_54cff0c7d284d4afc2e693a97e1978d9/action1.png "Product Avatar Image")

Action1

](https://www.g2.com/products/action1/reviews)[
View all
](https://www.g2.com/products/slack/integrations)

Screenshots

**Output Messenger**
 ![Output Messenger screenshot](https://images.g2crowd.com/cdn-cgi/image/width=600,height=600,fit=scale-down,format=auto,onerror=redirect,/https://images.g2crowd.com/uploads/attachment/file/33376/uploads_2F34120145-00f7-4344-8ac3-51d825936e86_2Fin-built.png)

**Slack**
 ![Slack screenshot](https://images.g2crowd.com/cdn-cgi/image/width=600,height=600,fit=scale-down,format=auto,onerror=redirect,/https://images.g2crowd.com/uploads/attachment/file/56604/expirable-direct-uploads_2F093f5635-00ea-4983-81a7-9eba72cc800d_2FMulti-Device_Group.png)

**Ratings**
from reviews

Meets Requirements

**Output Messenger**

8.6

8.613

**Slack**

9.2

9.231,896

Ease of Use

**Output Messenger**

8.7

8.713

**Slack**

9.2

9.233,103

Ease of Setup

**Output Messenger**

9.0

9.05

**Slack**

9.1

9.19,384

Ease of Admin

**Output Messenger**
Not enough data

**Slack**

8.9

8.95,510

Quality of Support

**Output Messenger**

7.7

7.711

**Slack**

8.8

8.822,232

Has the product been a good partner in doing business?

**Output Messenger**
Not enough data

**Slack**

9.1

9.14,993

Product Direction (% positive)

**Output Messenger**

7.3

7.313

**Slack**

8.7

8.731,069

**Features**
ratings from reviews

Business Instant Messaging[Hide 69 FeaturesShow 69 Features](javascript:void(0);)

9.2

8

8.3

16,188

Business Instant Messaging

File Sharing

9.4(won by 0.3)

6

9.1

14028

Notifications

9.2(won by 0.2)

6

9.0

14577

Search

9.2(won by 0.6)

6

 (There is a greater than 0.5 difference between this product's rating and its competitors)

8.6

13849

Screen Sharing

Not enough data

9.8(won by default)

7

Alerts/Notifications

Not enough data

7.2(won by default)

35

Business Instant Messaging 

Audio Conferencing

9.0(won by 0.5)

5

 (There is a greater than 0.5 difference between this product's rating and its competitors)

8.5

10272

Video Conferencing

9.0(won by 0.9)

5

 (There is a greater than 0.5 difference between this product's rating and its competitors)

8.1

9602

Two-Way Audio & Video

Not enough data

Not enough data

Conferencing

Not enough data

Not enough data

Business Instant Messaging

Mobile Application

Not enough data

9.1(won by default)

13710

Web Application

Not enough data

9.2(won by default)

13305

Third-Party Integrations

Not enough data

9.0(won by default)

11890

Active Directory Integration

Not enough data

Not enough data

Generative AI - Business Instant Messaging

Text Summarization

Not enough data

7.6(won by default)

1493

AI - Business Instant Messaging

AI Powered Search

Not enough data

7.5(won by default)

1467

Smart Notifications

Not enough data

7.9(won by default)

1477

AI Powered Language Translation

Not enough data

7.4(won by default)

1448

Content Generation

Not enough data

7.4(won by default)

1448

Generative AI

Not enough data

Not enough data

Agentic AI - Business Instant Messaging

Cross-system Integration

Not enough data

7.7(won by default)

880

Natural Language Interaction

Not enough data

7.7(won by default)

862

Multi-Language

Not enough data

Not enough data

Additional Functionality

Group Messaging

Not enough data

9.5(won by default)

10

Transcripts/Chat History

Not enough data

9.0(won by default)

5

@mentions

Not enough data

6.0(won by default)

5

Bulk Send

Not enough data

Not enough data

Meeting Management

Not enough data

Not enough data

Mobile Access

Not enough data

Not enough data

Rich Text Editor

Not enough data

Not enough data

Role-Based Permissions

Not enough data

Not enough data

Discussions/Forums

Not enough data

Not enough data

Contact Management

Not enough data

Not enough data

User Management

Not enough data

Not enough data

Message Recall

Not enough data

Not enough data

Canned Responses

Not enough data

Not enough data

Document Storage

Not enough data

Not enough data

Collaboration Tools

Not enough data

Not enough data

Activity Dashboard

Not enough data

Not enough data

Reporting & Statistics

Not enough data

Not enough data

Multi-Channel Communication

Not enough data

Not enough data

Workflow Configuration

Not enough data

Not enough data

Single Sign On

Not enough data

Not enough data

Access Controls/Permissions

Not enough data

Not enough data

Task Management

Not enough data

Not enough data

Reminders

Not enough data

Not enough data

Read Receipts

Not enough data

Not enough data

API

Not enough data

Not enough data

AI Copilot

Not enough data

Not enough data

Real-Time Chat

Not enough data

Not enough data

SSL Security

Not enough data

Not enough data

Data Import/Export

Not enough data

Not enough data

Email Management

Not enough data

Not enough data

Search/Filter

Not enough data

Not enough data

Secure Data Storage

Not enough data

Not enough data

Activity Tracking

Not enough data

Not enough data

Broadcast Messaging

Not enough data

Not enough data

Customizable Branding

Not enough data

Not enough data

Drag & Drop

Not enough data

Not enough data

Commenting/Notes

Not enough data

Not enough data

Employee Database

Not enough data

Not enough data

One-to-One Messaging

Not enough data

Not enough data

Event Calendar

Not enough data

Not enough data

Tagging

Not enough data

Not enough data

Customizable Templates

Not enough data

Not enough data

Real-Time Updates

Not enough data

Not enough data

Employee Photos

Not enough data

Not enough data

Mobile Alerts

Not enough data

Not enough data

Engagement Tracking

Not enough data

Not enough data

Blogs

Not enough data

Not enough data

Q&A Platforms[Hide 15 FeaturesShow 15 Features](javascript:void(0);)

Not enough data

8.9

425

Account Options

Single Sign-On (SSO)

Not enough data

9.2(won by default)

289

Social Login

Not enough data

8.4(won by default)

279

Reputation System

Not enough data

8.6(won by default)

269

Topic Subscription

Not enough data

8.7(won by default)

276

Bookmarking

Not enough data

8.9(won by default)

286

History

Not enough data

8.9(won by default)

282

Q&A Tools

Tags

Not enough data

9.1(won by default)

288

Commenting System

Not enough data

9.1(won by default)

281

Notifications

Not enough data

9.1(won by default)

290

Voting

Not enough data

8.7(won by default)

273

Integrations

Not enough data

9.1(won by default)

285

Knowledge Integrations

Not enough data

8.9(won by default)

273

Embedding

Not enough data

8.6(won by default)

267

Formatting

Not enough data

8.9(won by default)

271

Analytics

Not enough data

8.5(won by default)

266

AI Note-Taking Software[Hide 9 FeaturesShow 9 Features](javascript:void(0);)

Not enough data

9.2

35

Action Item Detection - AI Note-taking Software

Action Item extraction

Not enough data

8.9(won by default)

12

Summary Generation

Not enough data

9.2(won by default)

13

Automatic Transcription - AI Note-taking Software

Speech-to-text Transcription

Not enough data

9.5(won by default)

14

Collaboration & Sharing - AI Note-taking Software

Team-based Access

Not enough data

9.4(won by default)

15

Language & Accent Support - AI Note-taking Software

Multi-Language and Accent Support

Not enough data

9.2(won by default)

13

Multi-Platform Integration - AI Note-taking Software

Integrations

Not enough data

9.1(won by default)

15

Privacy & Security Controls - AI Note-taking Software

Access Control

Not enough data

9.1(won by default)

16

Searchable Note Archives - AI Note-taking Software

Semantic Search

Not enough data

8.8(won by default)

13

Speaker Identification - AI Note-taking Software

Speaker Recognition

Not enough data

9.2(won by default)

14

Audio Conferencing[Hide 17 FeaturesShow 17 Features](javascript:void(0);)

Not enough data

7.6

353

Agentic AI - Audio Conferencing

Proactive Assistance

Not enough data

7.5(won by default)

278

Decision Making

Not enough data

7.7(won by default)

279

Additional Functionality

Screen Sharing

Not enough data

Not enough data

Generative AI

Not enough data

Not enough data

Custom Greetings/Messages

Not enough data

Not enough data

Mobile Access

Not enough data

Not enough data

International Calling

Not enough data

Not enough data

Virtual Voicemail

Not enough data

Not enough data

Call Scheduling

Not enough data

Not enough data

AI Copilot

Not enough data

Not enough data

Call Conferencing

Not enough data

Not enough data

Reporting/Analytics

Not enough data

Not enough data

File Sharing

Not enough data

Not enough data

Two Way Audio & Video

Not enough data

Not enough data

Audio/Video Recording

Not enough data

Not enough data

Real-Time Chat

Not enough data

Not enough data

Audio Calls

Not enough data

Not enough data

Enterprise Search Software[Hide 69 FeaturesShow 69 Features](javascript:void(0);)

Not enough data

9.0

150

Agentic AI - Enterprise Search Software

Autonomous Task Execution

Not enough data

8.4(won by default)

57

Multi-step Planning

Not enough data

8.3(won by default)

54

Cross-system Integration

Not enough data

8.9(won by default)

55

Adaptive Learning

Not enough data

8.5(won by default)

55

Proactive Assistance

Not enough data

8.5(won by default)

55

Decision Making

Not enough data

8.6(won by default)

54

AI/Machine Learning

Not enough data

Not enough data

Compatibility

Federated Search

Not enough data

9.0(won by default)

97

File Types

Not enough data

9.0(won by default)

100

Global Language Support

Not enough data

8.9(won by default)

89

AI powered search - Enterprise Search Software

Generative RAG (Retrieval augmented generation)

Not enough data

9.0(won by default)

21

Relevance Tuning

Not enough data

9.1(won by default)

21

NLP & Semantic search

Not enough data

9.0(won by default)

21

Fuzzy Search

Not enough data

Not enough data

Search Queries

Typo Tolerance

Not enough data

8.8(won by default)

93

Faceted Search

Not enough data

9.0(won by default)

95

Synonyms

Not enough data

8.7(won by default)

88

Highlighting

Not enough data

9.1(won by default)

90

Natural Language

Not enough data

8.9(won by default)

89

Full Text Search

Not enough data

Not enough data

Compatibility - Enterprise Search Software

Global Language Support

Not enough data

9.2(won by default)

22

Federated Search

Not enough data

9.2(won by default)

21

File Types

Not enough data

9.3(won by default)

23

Functionality

Personalization

Not enough data

8.8(won by default)

88

Search Analytics

Not enough data

8.9(won by default)

88

Integrations

Not enough data

9.2(won by default)

97

Visual Analytics

Not enough data

Not enough data

Real-Time Analytics

Not enough data

Not enough data

Additional Functionality

Sentiment Analysis

Not enough data

Not enough data

Data Import/Export

Not enough data

Not enough data

Behavior Tracking

Not enough data

Not enough data

Data Storage Management

Not enough data

Not enough data

Single Sign On

Not enough data

Not enough data

AI Copilot

Not enough data

Not enough data

API

Not enough data

Not enough data

Multiple Data Sources

Not enough data

Not enough data

Activity Dashboard

Not enough data

Not enough data

Forecasting

Not enough data

Not enough data

Metadata Management

Not enough data

Not enough data

File Management

Not enough data

Not enough data

Text Analysis

Not enough data

Not enough data

Drag & Drop

Not enough data

Not enough data

Compliance Management

Not enough data

Not enough data

Tagging

Not enough data

Not enough data

Indexing

Not enough data

Not enough data

Autocomplete

Not enough data

Not enough data

For eCommerce

Not enough data

Not enough data

Customer Database

Not enough data

Not enough data

Catalog Management

Not enough data

Not enough data

Query Suggestions

Not enough data

Not enough data

Document Management

Not enough data

Not enough data

Access Controls/Permissions

Not enough data

Not enough data

Content Management

Not enough data

Not enough data

Generative AI

Not enough data

Not enough data

Task Management

Not enough data

Not enough data

Reporting & Statistics

Not enough data

Not enough data

Search/Filter

Not enough data

Not enough data

Data Capture and Transfer

Not enough data

Not enough data

Data Visualization

Not enough data

Not enough data

Alerts/Notifications

Not enough data

Not enough data

For Enterprises

Not enough data

Not enough data

User Management

Not enough data

Not enough data

Functionality - Enterprise Search Software

Search Analytics

Not enough data

9.0(won by default)

21

Personalization

Not enough data

9.2(won by default)

23

Integrations

Not enough data

9.4(won by default)

24

Search Queries - Enterprise Search Software

Highlighting

Not enough data

9.4(won by default)

21

Faceted Search

Not enough data

9.1(won by default)

20

Typo Tolerance

Not enough data

9.0(won by default)

22

Synonyms

Not enough data

9.3(won by default)

22

Work Management[Hide 32 FeaturesShow 32 Features](javascript:void(0);)

Not enough data

8.5

3,464

Automation

Workflows

Not enough data

8.9(won by default)

1282

Customization

Not enough data

8.8(won by default)

1237

Data repository

Not enough data

8.5(won by default)

1208

Administration

Permissions

Not enough data

8.8(won by default)

1217

Procedures

Not enough data

8.6(won by default)

1135

Remote Work

Not enough data

9.4(won by default)

1460

Project management

Task Prioritization

Not enough data

8.7(won by default)

1177

Dependencies

Not enough data

8.5(won by default)

1116

Planning

Not enough data

8.6(won by default)

1140

Views

Not enough data

8.5(won by default)

1130

Scheduling

Not enough data

8.6(won by default)

1143

Critical Path

Not enough data

8.3(won by default)

1094

Dashboards

Not enough data

8.3(won by default)

1126

Workload

Resource Allocation

Not enough data

8.4(won by default)

1076

Workspace

Not enough data

8.8(won by default)

1199

Configuration

Not enough data

8.6(won by default)

1093

Insights

Not enough data

8.5(won by default)

1098

Communication & Collaboration

Communication Channels

Not enough data

9.4(won by default)

2251

Document Management

Not enough data

9.1(won by default)

1481

Collaboration

Not enough data

9.5(won by default)

1809

Cost Management

Project Budgeting

Not enough data

8.0(won by default)

1068

Time & Expense

Not enough data

8.2(won by default)

1072

Profitability

Not enough data

8.1(won by default)

1063

Integration

Front Office

Not enough data

8.8(won by default)

1434

Back Office

Not enough data

8.4(won by default)

1093

External data

Not enough data

8.4(won by default)

1119

Generative AI

AI Text Generation

Not enough data

7.5(won by default)

1041

AI Text Summarization

Not enough data

7.7(won by default)

1078

Agentic AI - Work Management

Autonomous Task Execution

Not enough data

7.7(won by default)

529

Multi-step Planning

Not enough data

7.8(won by default)

513

Cross-system Integration

Not enough data

8.3(won by default)

575

Natural Language Interaction

Not enough data

7.8(won by default)

533

Project Collaboration[Hide 26 FeaturesShow 26 Features](javascript:void(0);)

Not enough data

8.5

1,742

Communication

Chat

Not enough data

9.5(won by default)

1236

Discussions

Not enough data

9.4(won by default)

1180

External

Not enough data

8.9(won by default)

1067

Feedback

Not enough data

8.9(won by default)

1039

Announcements

Not enough data

9.1(won by default)

1055

Content & Documents

File Sharing

Not enough data

9.2(won by default)

1132

Notes

Not enough data

8.9(won by default)

1046

Search

Not enough data

8.7(won by default)

1083

Versioning

Not enough data

8.1(won by default)

1001

Controls

Custom Views

Not enough data

8.3(won by default)

987

Followers

Not enough data

8.1(won by default)

982

User Management

Not enough data

8.7(won by default)

998

Calendars

Not enough data

8.4(won by default)

1007

Public Sharing

Not enough data

8.2(won by default)

974

Project Management

Task Management

Not enough data

8.4(won by default)

1002

Planning

Not enough data

8.3(won by default)

976

Visibility

Not enough data

8.5(won by default)

985

Integration

Not enough data

8.7(won by default)

1001

Remote Collaboration

Alignment

Not enough data

9.0(won by default)

999

Accountability

Not enough data

8.7(won by default)

969

Connectivity

Not enough data

9.0(won by default)

993

Offline Mode

Not enough data

7.9(won by default)

952

Generative AI

AI Text Generation

Not enough data

7.3(won by default)

926

AI Text Summarization

Not enough data

7.4(won by default)

930

Agentic AI - Project Collaboration

Multi-step Planning

Not enough data

7.5(won by default)

436

Cross-system Integration

Not enough data

7.7(won by default)

440

Knowledge Base[Hide 75 FeaturesShow 75 Features](javascript:void(0);)

Not enough data

8.4

529

Knowledge Pages

Templates

Not enough data

8.4(won by default)

343

In-Content Feedback

Not enough data

8.3(won by default)

343

Versioning and Version History

Not enough data

8.1(won by default)

331

Decision Trees

Not enough data

8.1(won by default)

328

Duplicate Detection

Not enough data

7.9(won by default)

323

Content Editor

Not enough data

8.3(won by default)

328

WYSIWYG Editor

Not enough data

Not enough data

Rich Text Editor

Not enough data

Not enough data

Drag & Drop Editor

Not enough data

Not enough data

Customizable Templates

Not enough data

Not enough data

Surveys & Feedback

Not enough data

Not enough data

Pre-built Templates

Not enough data

Not enough data

Knowledge Dissemination

Page Analytics

Not enough data

8.2(won by default)

319

Permissions

Not enough data

8.7(won by default)

327

Knowledge Sharing

Not enough data

9.0(won by default)

338

Notifications

Not enough data

8.9(won by default)

336

Advanced Search

Not enough data

8.3(won by default)

330

Organization

Not enough data

8.7(won by default)

334

Browser Extension

Not enough data

8.2(won by default)

317

Other Integrations

Not enough data

8.6(won by default)

325

Knowledge Integrations

Not enough data

8.6(won by default)

313

Full Text Search

Not enough data

Not enough data

Web Notifications

Not enough data

Not enough data

Alerts/Notifications

Not enough data

Not enough data

Website Integration

Not enough data

Not enough data

Social Media Integration

Not enough data

Not enough data

Reporting/Analytics

Not enough data

Not enough data

Agentic AI - Knowledge Base

Adaptive Learning

Not enough data

7.9(won by default)

196

Natural Language Interaction

Not enough data

7.9(won by default)

198

Proactive Assistance

Not enough data

7.8(won by default)

196

Multi-Language

Not enough data

Not enough data

Additional Functionality

Collaboration Tools

Not enough data

10.0(won by default)

6

Search/Filter

Not enough data

Not enough data

AI Copilot

Not enough data

Not enough data

Commenting/Notes

Not enough data

Not enough data

Content Publishing Options

Not enough data

Not enough data

Reporting & Statistics

Not enough data

Not enough data

Content Library

Not enough data

Not enough data

Document Classification

Not enough data

Not enough data

Drag & Drop

Not enough data

Not enough data

API

Not enough data

Not enough data

Customizable Branding

Not enough data

Not enough data

SEO Management

Not enough data

Not enough data

Real-Time Reporting

Not enough data

Not enough data

Generative AI

Not enough data

Not enough data

Self Service Portal

Not enough data

Not enough data

Widgets

Not enough data

Not enough data

Mobile Interface

Not enough data

Not enough data

Catalog Management

Not enough data

Not enough data

Online Forums

Not enough data

Not enough data

Email Alerts

Not enough data

Not enough data

Mobile Alerts

Not enough data

Not enough data

Dashboard

Not enough data

Not enough data

Feedback Management

Not enough data

Not enough data

Document Storage

Not enough data

Not enough data

User Management

Not enough data

Not enough data

Live Chat

Not enough data

Not enough data

Chatbot

Not enough data

Not enough data

Knowledge Management

Not enough data

Not enough data

Wiki

Not enough data

Not enough data

Text Editing

Not enough data

Not enough data

SSL Security

Not enough data

Not enough data

Customizable Reports

Not enough data

Not enough data

Customizable Fields

Not enough data

Not enough data

Data Import/Export

Not enough data

Not enough data

Single Sign On

Not enough data

Not enough data

Content Management

Not enough data

Not enough data

Workflow Management

Not enough data

Not enough data

Knowledge Base Management

Not enough data

Not enough data

Activity Tracking

Not enough data

Not enough data

Discussions/Forums

Not enough data

Not enough data

Activity Dashboard

Not enough data

Not enough data

Calendar Management

Not enough data

Not enough data

Communication Management

Not enough data

Not enough data

Document Management

Not enough data

Not enough data

Unified Workspaces[Hide 53 FeaturesShow 53 Features](javascript:void(0);)

Not enough data

8.3

1,066

Login Options 

Single Sign-On (SSO)

Not enough data

9.1(won by default)

777

Password Saver

Not enough data

8.5(won by default)

736

Productivity

Email Client

Not enough data

8.0(won by default)

724

Split Screen

Not enough data

8.3(won by default)

735

Activity Feed

Not enough data

8.6(won by default)

742

Virtual Assistant

Not enough data

7.9(won by default)

717

Analytics and Reporting

Not enough data

7.9(won by default)

707

Customization 

Custom Workflows

Not enough data

8.6(won by default)

737

Multiple Workspaces

Not enough data

9.0(won by default)

759

Custom Application Integration

Not enough data

8.7(won by default)

717

Agentic AI - Unified Workspaces

Autonomous Task Execution

Not enough data

7.5(won by default)

402

Adaptive Learning

Not enough data

7.6(won by default)

400

Additional Functionality

Activity Dashboard

Not enough data

Not enough data

Remote Access/Control

Not enough data

Not enough data

Commenting/Notes

Not enough data

Not enough data

Customizable Templates

Not enough data

Not enough data

Time Zone Tracking

Not enough data

Not enough data

Reporting & Statistics

Not enough data

Not enough data

Projections

Not enough data

Not enough data

Prioritization

Not enough data

Not enough data

Softphone

Not enough data

Not enough data

Employee Activity Monitoring

Not enough data

Not enough data

File Transfer

Not enough data

Not enough data

Email Management

Not enough data

Not enough data

SSL Security

Not enough data

Not enough data

Calendar Management

Not enough data

Not enough data

Document Management

Not enough data

Not enough data

Alerts/Notifications

Not enough data

Not enough data

Meeting Management

Not enough data

Not enough data

Generative AI

Not enough data

Not enough data

Workflow Management

Not enough data

Not enough data

Data Import/Export

Not enough data

Not enough data

Tagging

Not enough data

Not enough data

Real-Time Data

Not enough data

Not enough data

API

Not enough data

Not enough data

Project Time Tracking

Not enough data

Not enough data

AI Copilot

Not enough data

Not enough data

Single Sign On

Not enough data

Not enough data

Remote Support

Not enough data

Not enough data

Collaboration Tools

Not enough data

Not enough data

Live Chat

Not enough data

Not enough data

Two-Way Audio & Video

Not enough data

Not enough data

Electronic Signature

Not enough data

Not enough data

Video Chat

Not enough data

Not enough data

Assignment Management

Not enough data

Not enough data

Drag & Drop

Not enough data

Not enough data

Communication Management

Not enough data

Not enough data

Customizable Branding

Not enough data

Not enough data

Access Controls/Permissions

Not enough data

Not enough data

Task Management

Not enough data

Not enough data

@mentions

Not enough data

Not enough data

Progress Tracking

Not enough data

Not enough data

Video Conferencing

Not enough data

Not enough data

Workflow Management[Hide 49 FeaturesShow 49 Features](javascript:void(0);)

Not enough data

8.4

944

Setup

Activities

Not enough data

9.1(won by default)

685

Flows

Not enough data

8.9(won by default)

681

Dependencies

Not enough data

8.7(won by default)

652

Notifications

Not enough data

8.9(won by default)

703

Calendar Management

Not enough data

Not enough data

Business Process Automation

Not enough data

Not enough data

Management

Updates

Not enough data

9.0(won by default)

669

Audit Trail

Not enough data

8.7(won by default)

645

Integration

Not enough data

8.9(won by default)

674

Generative AI

AI Text Generation

Not enough data

7.7(won by default)

558

Generative AI

Not enough data

Not enough data

Agentic AI - Workflow Management

Autonomous Task Execution

Not enough data

7.7(won by default)

276

Multi-step Planning

Not enough data

7.9(won by default)

272

Cross-system Integration

Not enough data

8.1(won by default)

281

Adaptive Learning

Not enough data

7.9(won by default)

278

Natural Language Interaction

Not enough data

7.9(won by default)

277

Proactive Assistance

Not enough data

7.9(won by default)

278

Decision Making

Not enough data

8.0(won by default)

281

Additional Functionality

Drag & Drop

Not enough data

Not enough data

Template Management

Not enough data

Not enough data

Approval Process Control

Not enough data

Not enough data

Customizable Dashboard

Not enough data

Not enough data

Rules-Based Workflow

Not enough data

Not enough data

Document Management

Not enough data

Not enough data

Monitoring

Not enough data

Not enough data

Progress Tracking

Not enough data

Not enough data

Workflow Configuration

Not enough data

Not enough data

Collaboration Tools

Not enough data

Not enough data

Commenting/Notes

Not enough data

Not enough data

Task Management

Not enough data

Not enough data

Forms Management

Not enough data

Not enough data

No-Code

Not enough data

Not enough data

Data Import/Export

Not enough data

Not enough data

Email Management

Not enough data

Not enough data

Customizable Reports

Not enough data

Not enough data

Access Controls/Permissions

Not enough data

Not enough data

Graphical Workflow Editor

Not enough data

Not enough data

Real-Time Data

Not enough data

Not enough data

API

Not enough data

Not enough data

Search/Filter

Not enough data

Not enough data

AI Copilot

Not enough data

Not enough data

Mobile Access

Not enough data

Not enough data

Customizable Fields

Not enough data

Not enough data

Activity Tracking

Not enough data

Not enough data

Compliance Tracking

Not enough data

Not enough data

Role-Based Permissions

Not enough data

Not enough data

Reporting/Analytics

Not enough data

Not enough data

Project Workflow

Not enough data

Not enough data

Activity Dashboard

Not enough data

Not enough data

Show 4 feature categories with incomplete data

Artificial Intelligence[Hide 37 FeaturesShow 37 Features](javascript:void(0);)

Not enough data

Not enough data

Additional Functionality

Tagging

Not enough data

Not enough data

Natural Language Processing

Not enough data

Not enough data

Data Extraction

Not enough data

Not enough data

Multi-Language

Not enough data

Not enough data

Predictive Analytics

Not enough data

Not enough data

Drag & Drop

Not enough data

Not enough data

Speech Recognition

Not enough data

Not enough data

Reporting/Analytics

Not enough data

Not enough data

Data Storage Management

Not enough data

Not enough data

Virtual Personal Assistant (VPA)

Not enough data

Not enough data

AI Copilot

Not enough data

Not enough data

Customer Segmentation

Not enough data

Not enough data

Collaboration Tools

Not enough data

Not enough data

Data Import/Export

Not enough data

Not enough data

Generative AI

Not enough data

Not enough data

For eCommerce

Not enough data

Not enough data

Role-Based Permissions

Not enough data

Not enough data

Customizable Branding

Not enough data

Not enough data

Search/Filter

Not enough data

Not enough data

Monitoring

Not enough data

Not enough data

Document Management

Not enough data

Not enough data

API

Not enough data

Not enough data

Data Visualization

Not enough data

Not enough data

Trend Analysis

Not enough data

Not enough data

Machine Learning

Not enough data

Not enough data

Access Controls/Permissions

Not enough data

Not enough data

Alerts/Escalation

Not enough data

Not enough data

Performance Metrics

Not enough data

Not enough data

Real-Time Data

Not enough data

Not enough data

Third-Party Integrations

Not enough data

Not enough data

Mobile App

Not enough data

Not enough data

Multiple Data Sources

Not enough data

Not enough data

For Sales Teams/Organizations

Not enough data

Not enough data

Sentiment Analysis

Not enough data

Not enough data

Activity Dashboard

Not enough data

Not enough data

Chatbot

Not enough data

Not enough data

Workflow Automation

Not enough data

Not enough data

Collaboration & Productivity[Hide 45 FeaturesShow 45 Features](javascript:void(0);)

Not enough data

Not enough data

Additional Functionality

Third-Party Integrations

Not enough data

Not enough data

To-Do List

Not enough data

Not enough data

@mentions

Not enough data

Not enough data

Single Sign On

Not enough data

Not enough data

File Management

Not enough data

Not enough data

Activity Dashboard

Not enough data

Not enough data

Drag & Drop

Not enough data

Not enough data

Alerts/Notifications

Not enough data

Not enough data

Prioritization

Not enough data

Not enough data

Access Controls/Permissions

Not enough data

Not enough data

Screen Sharing

Not enough data

Not enough data

Content Management

Not enough data

Not enough data

Brainstorming

Not enough data

Not enough data

AI Copilot

Not enough data

Not enough data

File Transfer

Not enough data

Not enough data

Calendar Management

Not enough data

Not enough data

Status Tracking

Not enough data

Not enough data

Real-Time Notifications

Not enough data

Not enough data

Version Control

Not enough data

Not enough data

Task Management

Not enough data

Not enough data

Activity Tracking

Not enough data

Not enough data

Real Time Editing

Not enough data

Not enough data

Communication Management

Not enough data

Not enough data

Chat/Messaging

Not enough data

Not enough data

Tagging

Not enough data

Not enough data

Generative AI

Not enough data

Not enough data

Assignment Management

Not enough data

Not enough data

Task Scheduling

Not enough data

Not enough data

Project Management

Not enough data

Not enough data

Collaboration Tools

Not enough data

Not enough data

Workflow Management

Not enough data

Not enough data

Secure Data Storage

Not enough data

Not enough data

File Sharing

Not enough data

Not enough data

Document Storage

Not enough data

Not enough data

Task Progress Tracking

Not enough data

Not enough data

Discussions/Forums

Not enough data

Not enough data

Commenting/Notes

Not enough data

Not enough data

Reporting & Statistics

Not enough data

Not enough data

Contact Management

Not enough data

Not enough data

Video Conferencing

Not enough data

Not enough data

Progress Tracking

Not enough data

Not enough data

Mobile Access

Not enough data

Not enough data

API

Not enough data

Not enough data

Document Management

Not enough data

Not enough data

Customizable Branding

Not enough data

Not enough data

Enterprise AI Chatbots[Hide 16 FeaturesShow 16 Features](javascript:void(0);)

Not enough data

Not enough data

AI & Conversational Intelligence - Enterprise AI Chatbots

Natural Language Understanding

Not enough data

Not enough data

Retrieval-Augmented Generation (RAG)

Not enough data

Not enough data

Contextual Response Generation

Not enough data

Not enough data

Multi-Turn Conversations

Not enough data

Not enough data

Knowledge & Data Integration - Enterprise AI Chatbots

API & Custom Data Connectors

Not enough data

Not enough data

Real-Time Data Retrieval

Not enough data

Not enough data

Knowledge Base Integrations

Not enough data

Not enough data

CRM & ERP Integrations

Not enough data

Not enough data

Security, Governance & Compliance - Enterprise AI Chatbots

Audit Logging

Not enough data

Not enough data

Data Residency Controls

Not enough data

Not enough data

Role-Based Access Controls

Not enough data

Not enough data

Response Guardrails

Not enough data

Not enough data

Administration & Deployment - Enterprise AI Chatbots

Escalation Workflows

Not enough data

Not enough data

Workflow Automation

Not enough data

Not enough data

Multi-Channel Deployment

Not enough data

Not enough data

Conversation Analytics

Not enough data

Not enough data

Knowledge Management[Hide 42 FeaturesShow 42 Features](javascript:void(0);)

Not enough data

Not enough data

Knowledge Base

Q & A

Not enough data

Not enough data

Link Sharing

Not enough data

Not enough data

Searchable

Not enough data

Not enough data

Security

Verification

Not enough data

Not enough data

Role-Based Permission

Not enough data

Not enough data

Public vs Private

Not enough data

Not enough data

Content

Trackable Analytics

Not enough data

Not enough data

Import

Not enough data

Not enough data

File Viewing

Not enough data

Not enough data

Update Notifications

Not enough data

Not enough data

Communication

Social Features

Not enough data

Not enough data

Tagging 

Not enough data

Not enough data

Upload 

Not enough data

Not enough data

Comments

Not enough data

Not enough data

Additional Functionality

Collaboration Tools

Not enough data

Not enough data

SSL Security

Not enough data

Not enough data

Reporting & Statistics

Not enough data

Not enough data

Customizable Reports

Not enough data

Not enough data

Customizable Fields

Not enough data

Not enough data

Customizable Branding

Not enough data

Not enough data

Data Import/Export

Not enough data

Not enough data

Single Sign On

Not enough data

Not enough data

Content Management

Not enough data

Not enough data

Content Library

Not enough data

Not enough data

Workflow Management

Not enough data

Not enough data

Text Editing

Not enough data

Not enough data

Widgets

Not enough data

Not enough data

Generative AI

Not enough data

Not enough data

Knowledge Base Management

Not enough data

Not enough data

Activity Tracking

Not enough data

Not enough data

Discussions/Forums

Not enough data

Not enough data

API

Not enough data

Not enough data

Live Chat

Not enough data

Not enough data

Activity Dashboard

Not enough data

Not enough data

AI Copilot

Not enough data

Not enough data

Calendar Management

Not enough data

Not enough data

Drag & Drop

Not enough data

Not enough data

Self Service Portal

Not enough data

Not enough data

Communication Management

Not enough data

Not enough data

Commenting/Notes

Not enough data

Not enough data

Catalog Management

Not enough data

Not enough data

Document Management

Not enough data

Not enough data

User Insights

Reviewers' Company Size

[![Output Messenger](https://images.g2crowd.com/uploads/product/hd_favicon/1487566557/output-messenger.svg "Output Messenger")](https://www.g2.com/products/output-messenger/reviews)

Output Messenger

Small-Business(50 or fewer emp.)

53.3%

Mid-Market(51-1000 emp.)

33.3%

Enterprise(\> 1000 emp.)

13.3%

[![Slack](https://images.g2crowd.com/uploads/product/hd_favicon/1547670687/slack.svg "Slack")](https://www.g2.com/products/slack/reviews)

Slack

Small-Business(50 or fewer emp.)

40.7%

Mid-Market(51-1000 emp.)

40.7%

Enterprise(\> 1000 emp.)

18.5%

Small-Business

(50 or fewer emp.)

53.3%

40.7%

Mid-Market

(51-1000 emp.)

33.3%

40.7%

Enterprise

(\> 1000 emp.)

13.3%

18.5%

Reviewers' Industry

[![Output Messenger](https://images.g2crowd.com/uploads/product/hd_favicon/1487566557/output-messenger.svg "Output Messenger")](https://www.g2.com/products/output-messenger/reviews)
Output Messenger

Real Estate

15.4%

Staffing and Recruiting

7.7%

Online Media

7.7%

Newspapers

7.7%

Marketing and Advertising

7.7%

Other

53.8%

[![Slack](https://images.g2crowd.com/uploads/product/hd_favicon/1547670687/slack.svg "Slack")](https://www.g2.com/products/slack/reviews)
Slack

Computer Software

15.4%

Information Technology and Services

13.2%

Marketing and Advertising

8.4%

Internet

4.6%

Financial Services

3.4%

Other

55.0%

FAQs

## Output Messenger vs Slack FAQs

Generated using AI

Last updated: August 16, 2026

### What is the difference between Slack vs Output Messenger?

Slack stands out for its higher reviewer satisfaction, broader adoption, and integration capabilities, while Output Messenger is favored for secure internal communication in smaller teams.

| [Slack](https://www.g2.com/products/slack/reviews) | [Output Messenger](https://www.g2.com/products/output-messenger/reviews) |
| --- | --- |
| 4.5/5 (39,282 reviews) | 4.2/5 (16 reviews) |
| — | — |
| 9.2 | 9.0 |
| 8.8 | 7.7 |
| Ease of Use (3,481 all-time mentions) | Communication (2 all-time mentions) |

### How do the pricing models of Slack and Output Messenger compare?

Slack is rated as the stronger value on price and cost satisfaction compared to Output Messenger.

- **Slack:** Reviewers highlight good pricing relative to the market and other tools, but note that the per-user cost can become expensive for growing teams, especially on higher tiers.
- **Output Messenger:** Reviewers do not cite pricing as a major concern, focusing more on security and internal deployment.
- **Switching reasons:** Reviewers mention switching from Output Messenger due to missing features and limited integrations.

### What are the best alternatives to Slack and Output Messenger?

The top 3 alternatives to Slack and Output Messenger are ClickUp, monday AI Work Platform, and Mattermost.

| Product | G2 Rating (reviews) | Largest Segment | Pricing Insight | Top Reviewer-Cited Strength |
| --- | --- | --- | --- | --- |
| [Slack](https://www.g2.com/products/slack/reviews) | 4.5/5 (39,282 reviews) | — | Reviewers highlight good pricing but note higher costs for larger teams | Ease of Use (3,481 all-time mentions) |
| [Output Messenger](https://www.g2.com/products/output-messenger/reviews) | 4.2/5 (16 reviews) | — | — | Communication (2 all-time mentions) |
| [ClickUp](https://www.g2.com/products/clickup/reviews) | 4.6/5 (13,736 reviews) | Small-Business | — | — |
| [monday AI Work Platform](https://www.g2.com/products/monday-com/reviews) | 4.7/5 (17,149 reviews) | Small-Business | — | — |
| [Mattermost](https://www.g2.com/products/mattermost/reviews) | 4.3/5 (369 reviews) | Mid-Market | — | — |

### Which Work Management features should I prioritize when comparing Slack and Output Messenger?

Buyers comparing Slack and Output Messenger should prioritize integrations, security, ease of use, communication features, and implementation experience.

- **Integrations:** Slack: 2,145 all-time mentions; Output Messenger: reviewers cite limited integration opportunities.
- **Security:** Output Messenger: reviewers highlight secure internal communication; Slack: security is not a top-cited theme.
- **Ease of Use:** Slack: 3,481 all-time mentions; Output Messenger: 8.7/10 Ease of Use score.
- **Communication Features:** Slack: 2,875 all-time mentions; Output Messenger: 2 all-time mentions.
- **Implementation Experience:** Slack: 9.2/10 Ease of Setup; Output Messenger: 9.0/10 Ease of Setup.

### What are the pros and cons of Slack vs Output Messenger?

Slack's headline strength is ease of use and integrations, while Output Messenger is strongest in secure internal communication.

- **Slack strengths:** Ease of Use (3,481 all-time mentions), Team Collaboration (3,029), Integrations (2,145), Communication (2,875), Features (1,936), Organization (1,251).
- **Slack trade-offs:** Notification Issues (1,114 all-time mentions), pricing concerns for larger teams, and occasional performance issues on mobile and desktop.
- **Output Messenger strengths:** Secure communication, simple interface, and internal deployment for privacy.
- **Output Messenger trade-offs:** Reviewers cite missing features, limited integrations, and occasional slow performance or maintenance downtime.

### Is Slack or Output Messenger better for small businesses?

Slack is the better fit for small businesses, supported by its strong small-business segment presence and reviewer sentiment.

- **Slack:** Small-business reviewers consistently highlight ease of use, quick setup, and integrations as key benefits for small teams.
- **Output Messenger:** Reviewers in smaller organizations value its secure internal communication, but note limited features and integrations compared to Slack.

### Which Work Management platform has better integrations?

Slack is favored by reviewers for integrations, with extensive third-party tool support and high mention counts.

- **Slack:** Jira (997 all-time mentions), Basecamp (47 all-time mentions), and Google Drive are frequently cited integrations.
- **Output Messenger:** Reviewers mention a desire for more integration opportunities and cite limited integration with other services.

### How do Slack and Output Messenger compare on customer support?

Slack and Output Messenger are within 1.1 points on Quality of Support, with Slack holding a moderate lead at 8.8 versus 7.7.

- **Slack:** Reviewers describe support as generally good, with onboarding and setup assistance frequently praised.
- **Output Messenger:** Reviewers note support is responsive but sometimes limited, with some citing the need for improved maintenance and update processes.

### Which is easier to implement, Slack or Output Messenger?

Slack and Output Messenger score within 0.2 points on Ease of Setup, indicating near parity in implementation experience.

- **Slack:** Reviewers consistently describe setup as easy and straightforward, with a 9.2/10 Ease of Setup score.
- **Output Messenger:** Reviewers report a simple setup process, with a 9.0/10 Ease of Setup score, though some mention occasional maintenance-related downtime.

Alternatives

**Output Messenger Alternatives**

 ![Mattermost](https://images.g2crowd.com/uploads/product/image/thumb_square/thumb_square_6111157b6ded2030827134a6a2ab74b5/mattermost.png "Mattermost")

[
Mattermost
](/products/mattermost/reviews)

 ![Microsoft Teams](https://images.g2crowd.com/uploads/product/hd_favicon/80ccd59e9b2a19036d9eb91995af1b69/microsoft-teams.svg "Microsoft Teams")

[
Microsoft Teams
](/products/microsoft-teams/reviews)

 ![BigAnt](https://images.g2crowd.com/uploads/product/image/thumb_square/thumb_square_951186f94094d9333647c7d9e5897a86/bigant.jpg "BigAnt")

[
BigAnt
](/products/bigant/reviews)

 ![Rocket.Chat](https://images.g2crowd.com/uploads/product/hd_favicon/53040764d390ae2c9fb8f8bde33f1bf1/rocket-chat.svg "Rocket.Chat")

[
Rocket.Chat
](/products/rocket-chat/reviews)

**Slack Alternatives**

 ![ClickUp](https://images.g2crowd.com/uploads/product/hd_favicon/b675771627028c890e21cb68228a24e9/clickup.svg "ClickUp")

[
ClickUp
](/products/clickup/reviews)

 ![monday AI Work Platform](https://images.g2crowd.com/uploads/product/hd_favicon/0ecee4762e51bfed79001cde447b63a5/monday-com.svg "monday AI Work Platform")

[
monday AI Work Platform
](/products/monday-com/reviews)

 ![Confluence](https://images.g2crowd.com/uploads/product/hd_favicon/cd7013b9ca4438b20378625373b7a8d8/confluence.svg "Confluence")

[
Confluence
](/products/confluence/reviews)

 ![Swit](https://images.g2crowd.com/uploads/product/hd_favicon/03572d4de75422ee76f430e8a724c3ce/swit.svg "Swit")

[
Swit
](/products/swit/reviews)