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Compare OpenProject and Slack 
Featured Products
At a Glance
Market Segments
Small-Business (62.5% of reviews)
Small-Business (41.2% of reviews)
Entry-Level Pricing
Free
$0.00
OpenProject
Star Rating
(25)3.8 out of 5
Market Segments
Small-Business (62.5% of reviews)
Pros & Cons
Entry-Level Pricing
Free
Browse all 3 pricing plansSlack
Star Rating
(37,760)4.5 out of 5
Market Segments
Small-Business (41.2% of reviews)
Pros & Cons
Entry-Level Pricing
$0.00
Browse all 4 pricing plansSummary
AI Generated Summary
AI-generated. Powered by real user reviews.
- Users report that Slack excels in instant messaging with a score of 9.5, making it a preferred choice for real-time communication, while OpenProject, with a score of 9.0, offers solid external communication features but lacks the same level of immediacy.
- Reviewers mention that Slack's ease of use is rated at 9.1, which is significantly higher than OpenProject's 8.2, indicating that users find Slack more intuitive and user-friendly for daily tasks.
- G2 users highlight that Slack's task management features, particularly in task creation and assignment, score 9.0, while OpenProject shines in task assignment with a score of 9.3, suggesting that while both tools are effective, users appreciate Slack's overall task management experience more.
- Users on G2 report that Slack's mobile application is rated at 9.1, providing a seamless experience on the go, whereas OpenProject's mobile capabilities are less robust, impacting user satisfaction for remote work.
- Reviewers mention that Slack's integration capabilities score 9.0, allowing for a wide range of third-party applications, while OpenProject, with a score of 8.6, offers fewer integrations, which may limit flexibility for users needing diverse toolsets.
- Users say that Slack's notification system, rated at 9.0, is highly effective in keeping teams informed, while OpenProject's notifications, rated at 8.1, may not be as comprehensive, leading to potential communication gaps.
Pricing
Entry-Level Pricing
OpenProject
Community
Free
The Community edition of OpenProject is free of charge and self-managed.
- Self-hosted
- Free and open source
- All Community features
Slack
Free
$0.00
For teams wanting to try out Slack for an unlimited period of time
- Searchable message archives, up to 10k of your team’s most recent messages
- 10 apps or service integrations
- Native apps for iOS, Android, Mac & Windows Desktop
Free Trial
OpenProject
Free Trial is available
Slack
Free Trial is available
Ratings
Meets Requirements
7.9
21
9.2
30,920
Ease of Use
8.2
21
9.1
31,789
Ease of Setup
8.3
11
9.1
8,192
Ease of Admin
8.9
9
8.9
4,984
Quality of Support
8.1
17
8.8
21,480
Has the product been a good partner in doing business?
8.6
6
9.0
4,463
Product Direction (% positive)
7.1
20
8.7
30,235
Features by Category
Tasks
9.5
7
|
Verified
Not enough data
7.4
7
|
Verified
Not enough data
8.8
7
Not enough data
8.3
7
|
Verified
Not enough data
7.9
7
Not enough data
6.4
6
Not enough data
7.4
7
|
Verified
Not enough data
5.8
6
Not enough data
Projects
8.3
7
|
Verified
Not enough data
7.0
5
Not enough data
8.6
7
|
Verified
Not enough data
8.1
6
|
Verified
Not enough data
8.6
6
|
Verified
Not enough data
6.9
6
Not enough data
8.8
7
Not enough data
8.7
5
|
Verified
Not enough data
5.3
5
Not enough data
8.7
5
Not enough data
9.0
5
|
Verified
Not enough data
Resource Management
Not enough data
Not enough data
Not enough data
Not enough data
6.7
6
|
Verified
Not enough data
Project Monitoring
6.7
5
|
Verified
Not enough data
6.3
5
Not enough data
6.7
6
|
Verified
Not enough data
Generative AI
Not enough data
Not enough data
Not enough data
Not enough data
Agentic AI - Project Management
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Business Instant Messaging
Not enough data
9.1
13847
Not enough data
9.0
14384
Not enough data
8.6
13707
Business Instant Messaging
Not enough data
8.5
10168
Not enough data
8.1
9502
Business Instant Messaging
Not enough data
9.1
13599
Not enough data
9.2
13239
Not enough data
9.0
11734
Generative AI - Business Instant Messaging
Not enough data
7.5
1475
AI - Business Instant Messaging
Not enough data
7.5
1461
Not enough data
7.9
1467
Not enough data
7.4
1445
Not enough data
7.4
1446
Agentic AI - Business Instant Messaging
Not enough data
7.6
868
Not enough data
7.6
861
Setup
Not enough data
9.0
665
Not enough data
8.9
656
Not enough data
8.6
643
Not enough data
8.9
665
Management
Not enough data
8.9
649
Not enough data
8.6
635
Not enough data
8.9
647
Generative AI
Not enough data
7.7
553
Agentic AI - Workflow Management
Not enough data
7.6
271
Not enough data
7.9
267
Not enough data
8.0
274
Not enough data
7.8
272
Not enough data
7.9
271
Not enough data
7.8
271
Not enough data
8.0
271
Account Options
Not enough data
9.1
266
Not enough data
8.3
265
Not enough data
8.6
257
Not enough data
8.6
261
Not enough data
8.9
266
Not enough data
8.8
262
Q&A Tools
Not enough data
9.0
265
Not enough data
9.0
263
Not enough data
9.1
267
Not enough data
8.6
257
Not enough data
9.0
262
Not enough data
8.8
258
Not enough data
8.5
254
Not enough data
8.8
255
Not enough data
8.4
253
Functionality
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Management
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Knowledge Pages
Not enough data
8.4
324
Not enough data
8.2
327
Not enough data
8.0
316
Not enough data
8.0
313
Not enough data
7.9
310
Not enough data
8.3
311
Knowledge Dissemination
Not enough data
8.1
305
Not enough data
8.7
310
Not enough data
8.9
312
Not enough data
8.9
313
Not enough data
8.3
309
Not enough data
8.2
302
Not enough data
8.6
314
Not enough data
8.6
303
Not enough data
8.5
300
Agentic AI - Knowledge Base
Not enough data
7.8
183
Not enough data
7.8
185
Not enough data
7.7
182
Login Options
Not enough data
9.0
739
Not enough data
8.5
721
Productivity
Not enough data
8.0
703
Not enough data
8.3
708
Not enough data
8.6
713
Not enough data
7.8
690
Not enough data
7.9
687
Customization
Not enough data
8.5
705
Not enough data
9.0
719
Not enough data
8.6
695
Agentic AI - Unified Workspaces
Not enough data
7.4
387
Not enough data
7.5
385
Compatibility
Not enough data
8.9
80
Not enough data
8.9
83
Not enough data
8.8
78
Agentic AI - Enterprise Search Software
Not enough data
8.3
49
Not enough data
8.1
46
Not enough data
8.7
47
Not enough data
8.3
47
Not enough data
8.4
47
Not enough data
8.4
45
Search Queries
Not enough data
8.6
79
Not enough data
9.0
78
Not enough data
8.6
78
Not enough data
8.9
79
Not enough data
8.8
76
AI powered search - Enterprise Search Software
Not enough data
8.5
13
Not enough data
8.6
13
Not enough data
8.5
13
Functionality
Not enough data
8.8
78
Not enough data
8.9
77
Not enough data
9.0
80
Compatibility - Enterprise Search Software
Not enough data
8.9
15
Not enough data
8.8
13
Not enough data
8.9
14
Functionality - Enterprise Search Software
Not enough data
8.8
14
Not enough data
9.1
13
Not enough data
9.0
14
Search Queries - Enterprise Search Software
Not enough data
9.0
13
Not enough data
8.7
13
Not enough data
8.5
14
Not enough data
8.9
14
Automation
Not enough data
8.8
1174
Not enough data
8.8
1144
Not enough data
8.5
1124
Administration
Not enough data
8.8
1141
Not enough data
8.6
1106
Not enough data
9.4
1166
Project management
Not enough data
8.7
1126
Not enough data
8.5
1096
Not enough data
8.5
1113
Not enough data
8.5
1102
Not enough data
8.5
1097
Not enough data
8.3
1072
Not enough data
8.2
1091
Workload
Not enough data
8.4
1061
Not enough data
8.8
1099
Not enough data
8.6
1063
Not enough data
8.4
1055
Communication & Collaboration
Not enough data
9.3
1215
Not enough data
9.0
1122
Not enough data
9.3
1182
Cost Management
Not enough data
8.0
1045
Not enough data
8.1
1045
Not enough data
8.1
1040
Integration
Not enough data
8.6
1062
Not enough data
8.4
1044
Not enough data
8.4
1033
Generative AI
Not enough data
7.5
991
Not enough data
7.6
988
Agentic AI - Work Management
Not enough data
7.6
494
Not enough data
7.7
490
Not enough data
8.0
491
Not enough data
7.7
491
Communication
Not enough data
9.4
1112
Not enough data
9.3
1098
Not enough data
8.8
1025
Not enough data
8.9
1016
Not enough data
9.1
1017
Content & Documents
Not enough data
9.1
1055
Not enough data
8.9
1018
Not enough data
8.7
1031
Not enough data
8.1
980
Controls
Not enough data
8.3
970
Not enough data
8.1
966
Not enough data
8.6
973
Not enough data
8.4
973
Not enough data
8.1
954
Project Management
Not enough data
8.4
969
Not enough data
8.3
955
Not enough data
8.5
964
Not enough data
8.6
960
Remote Collaboration
Not enough data
9.0
977
Not enough data
8.7
951
Not enough data
8.9
967
Not enough data
7.8
944
Generative AI
Not enough data
7.2
905
Not enough data
7.3
901
Agentic AI - Project Collaboration
Not enough data
7.4
418
Not enough data
7.6
420
Agentic AI - Audio Conferencing
Not enough data
7.3
265
Not enough data
7.5
265
Action Item Detection - AI Note-taking Software
Not enough data
8.5
9
Not enough data
8.9
9
Automatic Transcription - AI Note-taking Software
Not enough data
9.3
10
Collaboration & Sharing - AI Note-taking Software
Not enough data
9.1
9
Language & Accent Support - AI Note-taking Software
Not enough data
9.0
10
Multi-Platform Integration - AI Note-taking Software
Not enough data
8.7
10
Privacy & Security Controls - AI Note-taking Software
Not enough data
8.6
11
Searchable Note Archives - AI Note-taking Software
Not enough data
8.3
9
Speaker Identification - AI Note-taking Software
Not enough data
8.8
10
Knowledge Base
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Security
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Content
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Communication
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Categories
Categories
Shared Categories
OpenProject and Slack share no categories
Unique Categories
OpenProject is categorized as Project Management and Software Development Analytics Tools
Reviews
Reviewers' Company Size
OpenProject
Small-Business(50 or fewer emp.)
Mid-Market(51-1000 emp.)
Enterprise(> 1000 emp.)
Slack
Small-Business(50 or fewer emp.)
Mid-Market(51-1000 emp.)
Enterprise(> 1000 emp.)
Small-Business
(50 or fewer emp.)
Mid-Market
(51-1000 emp.)
Enterprise
(> 1000 emp.)
Reviewers' Industry
Information Technology and Services
41.7%
Computer Software
12.5%
Wholesale
4.2%
Oil & Energy
4.2%
Media Production
4.2%
Other
33.3%
Computer Software
15.3%
Information Technology and Services
13.1%
Marketing and Advertising
8.6%
Internet
4.7%
Education Management
3.3%
Other
55.0%
Discussions
What is OpenProject explain various features of OpenProject in detail?
2 Comments
DH
OpenProject is a project management software. You can run the free version on your own servers or buy the cloud version (subscription), which has additional...Read more
Is OpenProject a opensource?
2 Comments
OT
Yes, OpenProject is an open source project management software. Find out more here https://www.openproject.org/ Read more
What is OpenProject used for?
1 Comment
OT
OpenProject can be used for classic, as well as scrum project management and software development. Read more
How do I delete a channel in slack?
47 Comments
CH
Since this has already been answered, my $0.02 is that you should always archive channels rather than delete them for posterity and/or auditing purposes.Read more
What does slack software do?
28 Comments
RR
Slack is messaging and communication platform which allow an individual for video and audio calls and many more.Read more
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