Slack
Salesforce (NYSE: CRM) team messaging platform at $27.7B acquisition processing 1.5B weekly messages; competing with Mic...
Microsoft Teams
Microsoft 365 enterprise collaboration hub with 280M monthly active users for messaging, video, and files; integrating Copilot AI competing with Slack...
Zoom
San Jose unified communications (NASDAQ: ZM) at $4.665B FY2025 revenue; AI Companion included in paid plans serving 192,...
Complete Rankings
Microsoft 365 enterprise collaboration hub with 280M monthly active users for messaging, video, and files; integrating Copilot AI competing with Slack and Zoom for enterprise communication.
Salesforce (NYSE: CRM) team messaging platform at $27.7B acquisition processing 1.5B weekly messages; competing with Microsoft Teams for enterprise collaboration through Salesforce integration and developer-first experience.
San Jose unified communications (NASDAQ: ZM) at $4.665B FY2025 revenue; AI Companion included in paid plans serving 192,600 businesses and 70% Fortune 100 competing with Microsoft Teams for enterprise video and AI collaboration.
NASDAQ: TEAM enterprise collaboration platform at $5.215B FY2025 revenue with 300K+ customers; Jira, Confluence, and Atlassian Intelligence AI competing with Microsoft and ServiceNow for developer and enterprise team workflows.
Cisco's enterprise collaboration platform with FedRAMP-authorized video conferencing, UCaaS, and Webex Contact Center; $3.2B 2007 acquisition competing with Microsoft Teams and Zoom for enterprise comms.
NYSE-listed (RNG) cloud UCaaS platform with $2.4B revenue; 400K+ customers with Message-Video-Phone competing with Microsoft Teams Phone and Zoom for business communications platform.
NYSE-listed (ASAN) work management platform at $725M revenue serving 85%+ of Fortune 100; Asana AI project management competing with Monday.com and Notion for team coordination software.
All-in-one workspace with $10B valuation serving 30M users; flexible block-based notes, databases, and wikis with Notion AI assistant competing with Confluence and Coda for teams.
Part of Atlassian $4.4B revenue 2024 (+23% YoY); 300K+ Atlassian customers; 50,370+ companies use Confluence; 1.88% knowledge management market share; NASA, Netflix, Facebook customers; wiki collaboration leader
Developer-loved issue tracker with keyboard-first interface and local-sync speed; $52M Sequoia-backed competing with Jira for engineering teams that prioritize developer experience over feature breadth.
Google/Alphabet (NASDAQ: GOOGL) cloud productivity suite with 9M+ paying businesses and Gemini AI; Gmail, Docs, Meet, and Drive competing with Microsoft 365 and Copilot for enterprise productivity platform.
Cloud UCaaS and CCaaS platform with $725M revenue; XCaaS unified communications and contact center competing against Zoom, Microsoft Teams, and RingCentral for mid-market.
San Francisco no-code relational database and app builder for 450,000+ organizations; $1.36B raised at $11.7B valuation competing with Notion and Monday.com for team workflow automation and custom operations apps.
Visual kanban project management (Atlassian, NASDAQ: TEAM, acquired $425M 2017) with 50M+ users; May 2025 AI update adding Inbox/Planner/Mirror Cards competing with Asana and Monday.com for team workflow.
2024 revenue $41.1M (+54% from $26.8M in 2023); acquired by Grammarly December 2024; $1.4B valuation (2021)
Cork Ireland project management platform for agencies at $83.3M revenue with client portals and time tracking for 20K+ customers; $100M raised competing with Asana and Monday.com for professional services project management.
Enterprise work management platform with $1.1B revenue taken private by Blackstone and Vista Equity; spreadsheet-style project tracking for 85K organizations competing with Monday.com and Asana.
Online appointment booking platform for 50K+ service businesses acquired by Squarespace Apr 2019; $20-61/month with Stripe/Square payments, SMS reminders, intake forms, competing with Calendly and Vagaro for beauty/wellness/coaching scheduling automation.
Brighton UK bootstrapped product management platform that invented Now-Next-Later roadmapping; six-figure ARR serving HP/Adobe/Autodesk/NHS with CoPilot AI assistant and Mind the Product community competing with Aha! for outcome-oriented product planning.
SF bootstrapped online form builder at $144.9M revenue Oct 2024 with zero VC funding across 18 years; 650+ employees serving 500K+ customers competing with Typeform and Google Forms for no-code data collection and workflow automation.
AI Word document editor with formatting-aware edits preserving track-changes and document structure; competing with Microsoft Copilot for Word for legal contract redlining, form filling, and document-wide transformation workflows.
Belgium bootstrapped no-code form builder at $2M ARR Mar 2025 with 150K customers and $0 raised; unlimited free tier competing with Typeform and Google Forms through product-led growth from $10K MRR (2022) to $175K MRR (2025).
Zurich scheduling platform at $24.9M revenue 2025 with 30M monthly users; acquired by TX Group 2014; no-login group availability polling competing with Calendly for professional meeting coordination across 30M+ monthly users.
Open-source hand-drawn collaborative whiteboard with 95,000+ GitHub stars used by Google, Meta, and Notion; Excalidraw+ paid tier competing with Miro and FigJam for developer and technical team diagramming.
Cloud diagramming and visual collaboration platform serving 99% of Fortune 500 with 130M users; $210M revenue unicorn at $3B valuation competing with Miro and Visio for enterprise visual communication.
SF YC S25 AI ops layer automating cross-platform workflows (Gmail/Slack/Notion/JIRA) giving 10+ hours/week back; 2025 launch competing with Zapier and Make for AI-native business workflow automation.
Grammarly is the AI writing assistant used by 40M+ daily active users and 70,000+ organizations, expanding from grammar checking into an enterprise AI communication platform with Grammarly Business.
Loom is the async video messaging platform acquired by Atlassian for $975M in 2023, enabling 25M+ users to share screen recordings and video messages for faster, more expressive team communication.
Zapier is the leading no-code automation platform connecting 7,000+ apps, with $310M revenue in 2024 and profitable since 2014, serving 1.8M+ businesses that automate workflows without coding.
AI-native email client acting as an autonomous AI secretary handling email filtering, composition, and prioritization; competing with Superhuman and Gmail AI for the 6+ hours/day email burden.
Paris-based collaborative email client adding task tracking and team context visibility; YC-backed competing with Gmail+project management tools for remote-first team communication.
AI-powered productivity platform combining calendar, tasks, and project management. Founded 2019, SF. $550M valuation, $75M funding. 8-figure ARR, 100K+ customers. Private.
Visual thinking platform combining flowcharts, wireframes, and mind maps for product teams; bootstrapped with speed-optimized design for rapid ideation and wireframing.
AI voice-to-text dictation app. $700M valuation. Used by 270 Fortune 500 companies. Write 4x faster than typing in any app. $81M raised. Founded 2021, SF. Private.
AI meeting notetaker with 20M+ users across 500K orgs; reached $1B valuation via tender offer in Jun 2025; profitable since 2023 with no primary capital since 2021
AI noise cancellation and meeting assistant. Processing 80B+ voice minutes monthly, 2,000+ businesses. Founded 2017, Berkeley CA. $37.7M revenue (2025). Private.
Bootstrapped AI browser extension with 6M+ users aggregating 20+ AI models (GPT-4o, Claude, Gemini). 2025 Chrome Editor's Pick. Founded 2023, Boston. No funding.
Bootstrapped AI transcription/translation platform. 53+ languages, 99% accuracy. SOC 2 Type 2 compliant. Founded 2017, SF. 6-person team. No external funding.
Virtual workspace with 2D map-based video; avatars trigger proximity conversations for remote team culture, pivoting toward events and virtual conferences.
Smart AI calendar scheduling tool. Acquired by Dropbox (Aug 2024). Auto-schedules tasks, habits, meetings. Founded 2019, Portland OR. Raised $4.8M seed.
AI meeting transcription platform hit $100M ARR in Mar 2025; 25M+ users; $500K revenue per employee; launched enterprise API and MCP server in Oct 2025
Cloud storage pioneer with 700M users and $2.5B revenue; repositioning with AI-powered universal search (Dash) across files and third-party work tools.
Open-source team messaging platform for air-gapped and self-hosted enterprise deployments; trusted by defense, intelligence, and regulated industries.
YC S19 AI productivity platform. 500K+ AI agents created. 112B tokens processed (2024). $16/month for 10-person team. Founded 2017, SF/NYC/Singapore.
AI meeting recorder and notetaker for Zoom, Google Meet, Teams. 1M+ users. Founded 2020, Aachen Germany. Raised ~$4.5M seed. ~$4.5M revenue. Private.
Scheduling automation platform with 20M users; freemium viral growth, $3B valuation, serving sales, recruiting, and customer success teams globally.
AI productivity unicorn. Pivoted from search to AI workspace. $1.25B valuation. $385M expanded Series B. $50M run rate in 5 months. 143 employees.
Privacy-first AI meeting assistant generating notes without joining calls as a bot. 20,000+ users. 100+ languages. Founded 2022, Cologne Germany.
AI knowledge bot connecting to 100+ integrations (Confluence, Slack, Teams). 700K+ users, 20K+ companies. No per-seat pricing. $299/month teams.
Open-source scheduling infrastructure with 30K+ GitHub stars; API-first platform for embedding appointment booking into any product or workflow.
| Rank | Brand |
|---|---|
#1 | Microsoft Teams |
#2 | Slack 💰 $27700M |
#3 | Zoom 💰 $4665M |
#4 | Atlassian 💰 $5215M |
#5 | Cisco Webex 💰 $3200M |
#6 | RingCentral 💰 $2400M |
#7 | Asana 💰 $725M |
#8 | Notion 💰 $10000M |
#9 | Confluence 💰 $4400M |
#10 | Linear 💰 $52M |
#11 | Google Workspace |
#12 | 8x8 💰 $725M |
#13 | Airtable 💰 $1360M |
#14 | Trello 💰 $425M |
#15 | Coda 💰 $41.1M |
#16 | Teamwork.com 💰 $83.3M |
#17 | Smartsheet 💰 $1100M |
#18 | Acuity Scheduling |
#19 | ProdPad |
#20 | Jotform 💰 $144.9M |
#21 | Praxim |
#22 | Tally 💰 $2M |
#23 | Doodle 💰 $24.9M |
#24 | Excalidraw |
#25 | Lucidchart 💰 $210M |
#26 | Slashy |
#27 | Grammarly |
#28 | Loom 💰 $975M |
#29 | Zapier 💰 $310M |
#30 | Stamp |
#31 | Upstream |
#32 | Motion 💰 $550M |
#33 | Whimsical |
#34 | Wispr Flow 💰 $700M |
#35 | Fireflies.ai 💰 $1000M |
#36 | Krisp 💰 $37.7M |
#37 | Sider |
#38 | Sonix |
#39 | Gather |
#40 | Reclaim AI 💰 $4.8M |
#41 | Otter.ai 💰 $100M |
#42 | Dropbox 💰 $2500M |
#43 | Mattermost |
#44 | Taskade |
#45 | tl;dv 💰 $4.5M |
#46 | Calendly 💰 $3000M |
#47 | Genspark 💰 $1250M |
#48 | Jamie |
#49 | Eesel AI |
#50 | Cal.com |