# Calendar, Spike vs Ignite Realtime Spark Comparison | | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Star Rating** | 4.7 out of 5 | 4.6 out of 5 | 4.2 out of 5 | | **Total Reviews** | 78 | 262 | 27 | | **Largest Market Segment** | Small-Business (47.4% of reviews) | Small-Business (77.1% of reviews) | Mid-Market (42.3% of reviews) | | **Entry Level Price** | No pricing available | $5.00 1 User Per Month | No pricing available | --- ## Top Pros & Cons ### Calendar Pros: - Ease of Use (5 reviews) - Integrations (3 reviews) Cons: - Limited Features (2 reviews) - Flow Management (1 reviews) ### Spike Pros: - Ease of Use (47 reviews) - Email Management (35 reviews) Cons: - Missing Features (19 reviews) - Limited Features (12 reviews) ### Ignite Realtime Spark Pros: - Communication (1 reviews) --- ## Ratings Comparison | Rating | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Meets Requirements** | 9.3 (62 reviews) | 8.9 (166 reviews) | 9.0 (20 reviews) | | **Ease of Use** | 9.5 (62 reviews) | 9.3 (170 reviews) | 9.6 (20 reviews) | | **Ease of Setup** | 9.2 (22 reviews) | 9.3 (53 reviews) | 9.3 (5 reviews) | | **Ease of Admin** | 9.2 (12 reviews) | 8.7 (36 reviews) | 9.3 (5 reviews) | | **Quality of Support** | 9.0 (45 reviews) | 9.0 (158 reviews) | 9.0 (18 reviews) | | **Has the product been a good partner in doing business?** | 9.4 (11 reviews) | 8.6 (34 reviews) | 10.0 (5 reviews) | | **Product Direction (% positive)** | 8.6 (59 reviews) | 9.6 (156 reviews) | 8.4 (22 reviews) | --- ## Pricing ### Calendar #### Entry-Level Pricing No pricing available #### Free Trial No information available ### Spike #### Entry-Level Pricing Plan: Pro Price: $5.00 1 User Per Month Description: Use Spike's email app with up to 3 email accounts with unified inbox and unlimited search history Key Features: - Conversational Email - Spike AI - 5 GB storage [Browse all 2 editions](https://www.g2.com/products/spike/pricing) #### Free Trial Yes ### Ignite Realtime Spark #### Entry-Level Pricing No pricing available #### Free Trial No information available --- ## Features Comparison By Category ### Conversational Marketing | Product | Score | Reviews | |---|---|---| | **Calendar** | N/A | N/A | | **Spike** | 8.8/10 | 28 | | **Ignite Realtime Spark** | N/A | N/A | #### Messenger | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Sequencing** | Not enough data | 9.1 (25 reviews) ✓ Verified | Not enough data | | **AI** | Not enough data | 9.3 (23 reviews) ✓ Verified | Not enough data | | **Live Chat** | Not enough data | 8.9 (24 reviews) ✓ Verified | Not enough data | | **Customization Interface** | Not enough data | 9.1 (25 reviews) ✓ Verified | Not enough data | #### Channels | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Social Media** | Not enough data | 8.7 (21 reviews) ✓ Verified | Not enough data | | **Website** | Not enough data | 8.4 (20 reviews) ✓ Verified | Not enough data | | **Text Message (SMS)** | Not enough data | 8.6 (19 reviews) ✓ Verified | Not enough data | | **Voice Assistants** | Not enough data | 8.6 (20 reviews) ✓ Verified | Not enough data | | **Other** | Not enough data | 8.2 (20 reviews) ✓ Verified | Not enough data | #### Customers | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Targeting** | Not enough data | 8.8 (20 reviews) ✓ Verified | Not enough data | | **Profiles** | Not enough data | 8.6 (22 reviews) | Not enough data | | **Analytics** | Not enough data | Feature Not Available | Not enough data | | **Lead Gathering** | Not enough data | Feature Not Available | Not enough data | | **Sales Conversion** | Not enough data | Feature Not Available | Not enough data | #### Agentic AI - Conversational Marketing | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Autonomous Task Execution** | Not enough data | Not enough data | Not enough data | | **Multi-step Planning** | Not enough data | Not enough data | Not enough data | | **Cross-system Integration** | Not enough data | Not enough data | Not enough data | | **Adaptive Learning** | Not enough data | Not enough data | Not enough data | | **Natural Language Interaction** | Not enough data | Not enough data | Not enough data | | **Proactive Assistance** | Not enough data | Not enough data | Not enough data | | **Decision Making** | Not enough data | Not enough data | Not enough data | ### Business Instant Messaging | Product | Score | Reviews | |---|---|---| | **Calendar** | N/A | N/A | | **Spike** | 7.7/10 | 84 | | **Ignite Realtime Spark** | N/A | N/A | #### Business Instant Messaging | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **File Sharing** | Not enough data | 8.9 (64 reviews) | Not enough data | | **Notifications** | Not enough data | 9.2 (69 reviews) | Not enough data | | **Search** | Not enough data | 8.7 (70 reviews) | Not enough data | #### Business Instant Messaging | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Audio Conferencing** | Not enough data | 8.9 (56 reviews) | Not enough data | | **Video Conferencing** | Not enough data | 8.4 (54 reviews) | Not enough data | #### Business Instant Messaging | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Mobile Application** | Not enough data | 9.2 (68 reviews) | Not enough data | | **Web Application** | Not enough data | 9.2 (63 reviews) | Not enough data | | **Integrations** | Not enough data | Feature Not Available | Not enough data | #### Generative AI - Business Instant Messaging | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Text Summarization** | Not enough data | 7.7 (10 reviews) | Not enough data | #### AI - Business Instant Messaging | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **AI Powered Search** | Not enough data | 6.9 (9 reviews) | Not enough data | | **Smart Notifications** | Not enough data | 7.2 (10 reviews) | Not enough data | | **AI Powered Language Translation** | Not enough data | 6.5 (9 reviews) | Not enough data | | **Content Generation** | Not enough data | 6.1 (9 reviews) | Not enough data | #### Agentic AI - Business Instant Messaging | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Cross-system Integration** | Not enough data | 5.0 (5 reviews) | Not enough data | | **Natural Language Interaction** | Not enough data | 5.7 (5 reviews) | Not enough data | ### AI Writing Assistant | Product | Score | Reviews | |---|---|---| | **Calendar** | N/A | N/A | | **Spike** | 9.1/10 | 9 | | **Ignite Realtime Spark** | N/A | N/A | #### Grammar | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Grammar Check** | Not enough data | 9.4 (8 reviews) | Not enough data | | **Tone Check** | Not enough data | 9.2 (8 reviews) | Not enough data | | **Sentence Formatting** | Not enough data | 9.0 (7 reviews) | Not enough data | #### Formatting | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Plagiarism Check** | Not enough data | 9.2 (6 reviews) | Not enough data | | **Style Editor** | Not enough data | 9.7 (6 reviews) | Not enough data | | **Citation Finder** | Not enough data | 9.0 (5 reviews) | Not enough data | #### Content | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Idea Recommendation** | Not enough data | 9.2 (6 reviews) | Not enough data | | **Content Generation** | Not enough data | 8.9 (6 reviews) | Not enough data | | **Form Generation** | Not enough data | 8.9 (6 reviews) | Not enough data | #### Product Type | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Standalone Application** | Not enough data | 8.9 (6 reviews) | Not enough data | | **Plugin** | Not enough data | 9.2 (6 reviews) | Not enough data | #### Generative AI | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **AI Text Generation** | Not enough data | Not enough data | Not enough data | | **AI Text Summarization** | Not enough data | Not enough data | Not enough data | ### Shared Inbox | Product | Score | Reviews | |---|---|---| | **Calendar** | N/A | N/A | | **Spike** | 9.7/10 | 6 | | **Ignite Realtime Spark** | N/A | N/A | #### Productivity Tools | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Notes** | Not enough data | 9.7 (6 reviews) | Not enough data | | **Internal Discussion** | Not enough data | 9.7 (5 reviews) | Not enough data | | **Assignments and Tasks** | Not enough data | Not enough data | Not enough data | | **Workflows** | Not enough data | Not enough data | Not enough data | | **Templates** | Not enough data | Not enough data | Not enough data | | **Integrations** | Not enough data | Feature Not Available | Not enough data | | **Tagging System** | Not enough data | Not enough data | Not enough data | #### Analytics | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Trends** | Not enough data | Not enough data | Not enough data | | **Performance Tracking** | Not enough data | Not enough data | Not enough data | | **Email Tracking** | Not enough data | Not enough data | Not enough data | #### Agentic AI - Shared Inbox | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Autonomous Task Execution** | Not enough data | Not enough data | Not enough data | | **Decision Making** | Not enough data | Not enough data | Not enough data | ### Email Client | Product | Score | Reviews | |---|---|---| | **Calendar** | N/A | N/A | | **Spike** | 9.0/10 | 85 | | **Ignite Realtime Spark** | N/A | N/A | #### Inbox Tools | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Unified Inbox** | Not enough data | 9.5 (72 reviews) | Not enough data | | **Filters** | Not enough data | 9.1 (67 reviews) | Not enough data | | **Reminders** | Not enough data | 9.2 (66 reviews) | Not enough data | | **Notifications** | Not enough data | 9.2 (64 reviews) | Not enough data | #### Coordination Tools | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Calendar** | Not enough data | 8.5 (64 reviews) | Not enough data | | **Contacts** | Not enough data | 8.6 (65 reviews) | Not enough data | | **Task Management** | Not enough data | 8.6 (60 reviews) | Not enough data | #### Software Options | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Desktop Application** | Not enough data | 9.3 (69 reviews) | Not enough data | | **Mobile Application** | Not enough data | 9.2 (70 reviews) | Not enough data | #### Email Client - Agentic AI | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Autonomous Task Execution** | Not enough data | Not enough data | Not enough data | | **Cross-system Integration** | Not enough data | Not enough data | Not enough data | ### Video Conferencing | Product | Score | Reviews | |---|---|---| | **Calendar** | N/A | N/A | | **Spike** | 8.8/10 | 42 | | **Ignite Realtime Spark** | N/A | N/A | #### Collaboration Tools | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Screen Sharing** | Not enough data | 9.1 (25 reviews) ✓ Verified | Not enough data | | **Presentations** | Not enough data | 8.6 (18 reviews) | Not enough data | | **Whiteboarding** | Not enough data | 8.7 (17 reviews) | Not enough data | | **Live Chat** | Not enough data | 8.8 (27 reviews) ✓ Verified | Not enough data | | **Hand Raising** | Not enough data | Feature Not Available | Not enough data | #### Meeting Coordination | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Scheduling** | Not enough data | 8.2 (32 reviews) ✓ Verified | Not enough data | | **Recording** | Not enough data | Feature Not Available | Not enough data | | **Participant Permissions** | Not enough data | 9.1 (27 reviews) ✓ Verified | Not enough data | | **One-Click Join** | Not enough data | 8.9 (24 reviews) ✓ Verified | Not enough data | #### Software Type | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Mobile** | Not enough data | 9.0 (32 reviews) ✓ Verified | Not enough data | | **Browser Application** | Not enough data | 9.0 (27 reviews) ✓ Verified | Not enough data | | **Desktop Application** | Not enough data | 8.9 (26 reviews) ✓ Verified | Not enough data | #### Agentic AI - Video Conferencing | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Autonomous Task Execution** | Not enough data | Not enough data | Not enough data | | **Proactive Assistance** | Not enough data | Not enough data | Not enough data | | **Decision Making** | Not enough data | Not enough data | Not enough data | ### Calendar | Product | Score | Reviews | |---|---|---| | **Calendar** | N/A | N/A | | **Spike** | 9.0/10 | 33 | | **Ignite Realtime Spark** | N/A | N/A | #### Calendar View | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Multi-Calendar View** | Not enough data | 9.1 (25 reviews) | Not enough data | | **Customizable Viewing** | Not enough data | 8.8 (27 reviews) | Not enough data | #### Shared Calendar | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Calendar Collaboration** | Not enough data | Feature Not Available | Not enough data | | **Multiple Calendar Management** | Not enough data | Feature Not Available | Not enough data | #### Accessibility | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Screen Reader Compatibility** | Not enough data | Feature Not Available | Not enough data | | **Keyboard Shortcuts** | Not enough data | 8.8 (7 reviews) | Not enough data | #### Integration | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Sync Multiple Calendars** | Not enough data | 9.3 (26 reviews) | Not enough data | | **Import Events** | Not enough data | 9.1 (24 reviews) | Not enough data | | **Software Integrations** | Not enough data | Feature Not Available | Not enough data | #### Notifications | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Customized Calendar Notifications** | Not enough data | Feature Not Available | Not enough data | | **Location-Based Alerts** | Not enough data | Feature Not Available | Not enough data | #### Generative AI | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **AI Text-to-Image** | Not enough data | Not enough data | Not enough data | | **AI Text-to-Speech** | Not enough data | Not enough data | Not enough data | | **AI Image-to-Text** | Not enough data | Not enough data | Not enough data | #### Agentic AI - Calendar | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Cross-system Integration** | Not enough data | Not enough data | Not enough data | ### Email Management | Product | Score | Reviews | |---|---|---| | **Calendar** | N/A | N/A | | **Spike** | 9.0/10 | 11 | | **Ignite Realtime Spark** | N/A | N/A | #### Sorting & Filtering | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Attachment Search** | Not enough data | Not enough data | Not enough data | | **Tags** | Not enough data | Not enough data | Not enough data | | **AI Sorting** | Not enough data | Not enough data | Not enough data | | **Predefined Rules** | Not enough data | Not enough data | Not enough data | #### Integrations | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Microsoft Outlook Integration** | Not enough data | Not enough data | Not enough data | | **Gmail Integration** | Not enough data | Not enough data | Not enough data | | **Apple Calendar Integration** | Not enough data | Not enough data | Not enough data | #### Time Management | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Unified Inbox** | Not enough data | 9.0 (5 reviews) | Not enough data | | **Email Automation** | Not enough data | Not enough data | Not enough data | | **Snooze** | Not enough data | Not enough data | Not enough data | #### Generative AI | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **AI Text Generation** | Not enough data | Not enough data | Not enough data | | **AI Text-to-Speech** | Not enough data | Not enough data | Not enough data | | **AI Text Summarization** | Not enough data | Not enough data | Not enough data | #### Agentic AI - Email Management | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Autonomous Task Execution** | Not enough data | Not enough data | Not enough data | | **Cross-system Integration** | Not enough data | Not enough data | Not enough data | ### Business Scheduling | Product | Score | Reviews | |---|---|---| | **Calendar** | 8.6/10 | 23 | | **Spike** | N/A | N/A | | **Ignite Realtime Spark** | N/A | N/A | #### Integrations | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **MS Teams Integration** | 7.3 (16 reviews) | Not enough data | Not enough data | | **Email Integration** | 9.5 (23 reviews) | Not enough data | Not enough data | | **Zoom Integration** | 8.5 (22 reviews) | Not enough data | Not enough data | | **Google Meet Integration** | 9.7 (18 reviews) | Not enough data | Not enough data | | **Salesforce Integration** | 7.4 (14 reviews) | Not enough data | Not enough data | #### Branding & Customizatio | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Custom Booking Page** | 8.3 (18 reviews) | Not enough data | Not enough data | | **Personalized Links** | 9.1 (20 reviews) | Not enough data | Not enough data | | **Personalized Web Embed** | 8.2 (16 reviews) | Not enough data | Not enough data | #### Automatic Rules & Configurations | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Set Working Hours** | 9.0 (21 reviews) | Not enough data | Not enough data | | **Automatic Updates** | 9.1 (20 reviews) | Not enough data | Not enough data | | **Buffer Times** | 8.4 (18 reviews) | Not enough data | Not enough data | #### Agentic AI - Business Scheduling | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Autonomous Task Execution** | Not enough data | Not enough data | Not enough data | | **Multi-step Planning** | Not enough data | Not enough data | Not enough data | ### Email | Product | Score | Reviews | |---|---|---| | **Calendar** | N/A | N/A | | **Spike** | 7.3/10 | 14 | | **Ignite Realtime Spark** | N/A | N/A | #### Generative AI | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **AI Text Generation** | Not enough data | 7.0 (10 reviews) | Not enough data | | **AI Text Summarization** | Not enough data | 8.0 (11 reviews) | Not enough data | | **AI Text-to-Speech** | Not enough data | 7.0 (9 reviews) | Not enough data | | **Autonomous Task Execution** | Not enough data | Not enough data | Not enough data | | **Cross-system Integration** | Not enough data | Not enough data | Not enough data | | **Proactive Assistance** | Not enough data | Not enough data | Not enough data | ### Email Encryption | Product | Score | Reviews | |---|---|---| | **Calendar** | N/A | N/A | | **Spike** | N/A | N/A | | **Ignite Realtime Spark** | N/A | N/A | #### Encryption Techniques - Email Encryption | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Encryption Algorithms** | Not enough data | Not enough data | Not enough data | | **Transport Encryption** | Not enough data | Not enough data | Not enough data | | **End-to-End Encryption** | Not enough data | Not enough data | Not enough data | #### Authentication, Verification, and Access Controls - Email Encryption | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Revocation Mechanisms** | Not enough data | Not enough data | Not enough data | | **Access Controls** | Not enough data | Not enough data | Not enough data | | **Digital Signatures** | Not enough data | Not enough data | Not enough data | | **Certificate Authorities** | Not enough data | Not enough data | Not enough data | #### Security Enhancements and Auditing - Email Encryption | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Malware Scanning** | Not enough data | Not enough data | Not enough data | | **Reporting** | Not enough data | Not enough data | Not enough data | | **Audit Trails** | Not enough data | Not enough data | Not enough data | | **Data Loss Prevention (DLP)** | Not enough data | Not enough data | Not enough data | #### Integration, Compatibility, and Usability - Email Encryption | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **User-Friendly Interfaces** | Not enough data | Not enough data | Not enough data | | **APIs and SDKs** | Not enough data | Not enough data | Not enough data | | **Email Client Integration** | Not enough data | Not enough data | Not enough data | | **Automation** | Not enough data | Not enough data | Not enough data | ### Note-Taking Software | Product | Score | Reviews | |---|---|---| | **Calendar** | N/A | N/A | | **Spike** | N/A | N/A | | **Ignite Realtime Spark** | N/A | N/A | #### Agentic AI - Note-Taking Software | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Autonomous Task Execution** | Not enough data | Not enough data | Not enough data | ### Audio Conferencing | Product | Score | Reviews | |---|---|---| | **Calendar** | N/A | N/A | | **Spike** | N/A | N/A | | **Ignite Realtime Spark** | N/A | N/A | #### Agentic AI - Audio Conferencing | Feature | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Proactive Assistance** | Not enough data | Not enough data | Not enough data | | **Decision Making** | Not enough data | Not enough data | Not enough data | --- ## Categories **Unique to Calendar (1):** [Business Scheduling Software](https://www.g2.com/categories/business-scheduling) **Unique to Spike (12):** [Email Client Software](https://www.g2.com/categories/email-client), [Business Instant Messaging Software](https://www.g2.com/categories/business-instant-messaging), [Email Software](https://www.g2.com/categories/email), [Email Management Software](https://www.g2.com/categories/email-management), [AI Writing Assistants](https://www.g2.com/categories/ai-writing-assistant), [Shared Inbox Software](https://www.g2.com/categories/shared-inbox), [Email Encryption Software](https://www.g2.com/categories/email-encryption), [Conversational Marketing Software](https://www.g2.com/categories/conversational-marketing), [Note-Taking Software](https://www.g2.com/categories/note-taking-software), [Audio Conferencing Software](https://www.g2.com/categories/audio-conferencing), [Calendar Software](https://www.g2.com/categories/calendar-software), [Video Conferencing Software](https://www.g2.com/categories/video-conferencing) **Unique to Ignite Realtime Spark (1):** [Other Office Software](https://www.g2.com/categories/other-office) --- ## Reviewer Demographics ### By Company Size | Segment | Calendar | Spike | Ignite Realtime Spark | |---|---|---|---| | **Small-Business** | 47.4% | 77.1% | 23.1% | | **Mid-Market** | 36.8% | 13.9% | 42.3% | | **Enterprise** | 15.8% | 9.1% | 34.6% | ### By Industry #### Calendar - **Computer Software:** 14.5% - **Marketing and Advertising:** 13.2% - **Information Technology and Services:** 9.2% - **Retail:** 6.6% - **Accounting:** 3.9% - **Education Management:** 3.9% - **Internet:** 3.9% - **Financial Services:** 2.6% - **Health, Wellness and Fitness:** 2.6% - **Higher Education:** 2.6% - **Other:** 36.8% #### Spike - **Information Technology and Services:** 12.2% - **Marketing and Advertising:** 9.1% - **Computer Software:** 9.1% - **Higher Education:** 5.2% - **Financial Services:** 3.0% - **Design:** 2.6% - **Entertainment:** 2.6% - **Internet:** 2.6% - **Consumer Services:** 2.2% - **Education Management:** 2.2% - **Other:** 49.1% #### Ignite Realtime Spark - **Building Materials:** 7.7% - **Information Technology and Services:** 7.7% - **Accounting:** 3.8% - **Business Supplies and Equipment:** 3.8% - **Computer Software:** 3.8% - **Defense & Space:** 3.8% - **E-Learning:** 3.8% - **Environmental Services:** 3.8% - **Financial Services:** 3.8% - **Government Administration:** 3.8% - **Other:** 53.8% --- ## Alternatives ### Alternatives to Calendar - [Calendly](https://www.g2.com/products/calendly/reviews) — 4.7/5 stars (2637 reviews) - [Chili Piper](https://www.g2.com/products/chili-piper/reviews) — 4.6/5 stars (736 reviews) - [Doodle](https://www.g2.com/products/doodle/reviews) — 4.4/5 stars (2069 reviews) - [HubSpot Sales Hub](https://www.g2.com/products/hubspot-sales-hub/reviews) — 4.4/5 stars (13797 reviews) - [Acuity Scheduling](https://www.g2.com/products/acuity-scheduling/reviews) — 4.7/5 stars (409 reviews) - [YouCanBookMe](https://www.g2.com/products/youcanbookme/reviews) — 4.7/5 stars (1934 reviews) - [Mixmax](https://www.g2.com/products/mixmax/reviews) — 4.6/5 stars (1457 reviews) - [Avoma](https://www.g2.com/products/avoma/reviews) — 4.6/5 stars (1362 reviews) - [Zoom Workplace](https://www.g2.com/products/zoom-workplace/reviews) — 4.5/5 stars (56368 reviews) - [Agentforce Sales (formerly Salesforce Sales Cloud)](https://www.g2.com/products/agentforce-sales-formerly-salesforce-sales-cloud/reviews) — 4.4/5 stars (25784 reviews) ### Alternatives to Spike - [Google Workspace](https://www.g2.com/products/google-workspace/reviews) — 4.6/5 stars (47972 reviews) - [Microsoft Outlook](https://www.g2.com/products/microsoft-outlook/reviews) — 4.5/5 stars (3470 reviews) - [Front](https://www.g2.com/products/front/reviews) — 4.7/5 stars (2463 reviews) - [Zoho Mail](https://www.g2.com/products/zoho-mail/reviews) — 4.4/5 stars (713 reviews) - [Thunderbird](https://www.g2.com/products/thunderbird/reviews) — 4.3/5 stars (339 reviews) - [Slack](https://www.g2.com/products/slack/reviews) — 4.5/5 stars (39012 reviews) - [Superhuman Mail](https://www.g2.com/products/superhuman-mail/reviews) — 4.7/5 stars (1242 reviews) - [Proton Mail For Business](https://www.g2.com/products/proton-mail-for-business/reviews) — 4.6/5 stars (265 reviews) - [Microsoft Teams](https://www.g2.com/products/microsoft-teams/reviews) — 4.4/5 stars (18899 reviews) - [Zoom Workplace](https://www.g2.com/products/zoom-workplace/reviews) — 4.5/5 stars (56368 reviews) ### Alternatives to Ignite Realtime Spark - [Slack Connector for Jira](https://www.g2.com/products/slack-connector-for-jira/reviews) — 4.7/5 stars (264 reviews) - [Socket.Io](https://www.g2.com/products/socket-io/reviews) — 4.6/5 stars (57 reviews) - [Gitter](https://www.g2.com/products/gitter/reviews) — 4.0/5 stars (49 reviews) - [Google Drive & Docs for Confluence](https://www.g2.com/products/google-drive-docs-for-confluence/reviews) — 4.5/5 stars (44 reviews) - [GAT Labs](https://www.g2.com/products/gat-labs/reviews) — 4.8/5 stars (39 reviews) - [Online Check Writer- powered by Zil Money](https://www.g2.com/products/online-check-writer-powered-by-zil-money/reviews) — 4.2/5 stars (36 reviews) - [ChatGPT for Excel](https://www.g2.com/products/chatgpt-for-excel/reviews) — 4.6/5 stars (26 reviews) - [NoteGPT](https://www.g2.com/products/notegpt/reviews) — 4.7/5 stars (25 reviews) - [MathType](https://www.g2.com/products/mathtype/reviews) — 4.1/5 stars (23 reviews) - [Sonetel](https://www.g2.com/products/sonetel/reviews) — 4.4/5 stars (21 reviews) --- ## Top Discussions ### Calendar No discussions available for this product. ### Spike - Title: [What is a spike task?](https://www.g2.com/discussions/what-is-a-spike-task) — 2 comments > **Top comment:** "A Spike task is an captured action item, visible in your inbox until you either action it , delete it, or 'reschedule' it to a future date ('snoozing', in..." - Title: [Spike - Syncing Mailbox Settings between devices - Feature Request](https://www.g2.com/discussions/spike-syncing-mailbox-settings-between-devices-feature-request) — 2 comments, 1 upvote *(includes official response)* > **Top comment:** "Hey Serge, Hi Serge, We currently don't offer a single login because common solutions have security disadvantages, and above all, Spike prioritizes..." - Title: [What is a spike in Devops?](https://www.g2.com/discussions/what-is-a-spike-in-devops) — 2 comments, 1 upvote > **Top comment:** "A spike is a user story for which the team cannot estimate the effort needed. In such a case, it is better to run time-boxed research, exploration to learn..." - Title: [Full HTML Signature Support](https://www.g2.com/discussions/full-html-signature-support) — 2 comments, 1 upvote > **Top comment:** "I guess its safe to say i wasn't the only one that suffered from the loss of bitcoins been stolen from worldofcryptomining account, over 18btc was stolen..." - Title: [Does it allow customization?](https://www.g2.com/discussions/50564-does-it-allow-customization) — 2 comments, 1 upvote > **Top comment:** "Hi Tyree! Certain things can be customized. For example - on mobile you can customize your swipes and quick actions. You can also customize your..." ### Ignite Realtime Spark No discussions available for this product. --- **Source:** [G2.com](https://www.g2.com) | [Comparison Page](https://www.g2.com/compare/calendar-vs-spike-vs-ignite-realtime-spark)