Alternatives to Slack
The top SaaS companies similar to Slack, ranked by relevance (named competitors first, then how closely their sectors overlap) and our 0-100 AI-readiness score. Each links to a full profile with funding and team.
Viktor62Artificial IntelligenceWarsaw, Poland$66.2M
Synumatic33Enterprise$1.0M
Lua Global55Agentic AISan Francisco, United States$15.8M
xFind.ai53EnterpriseTel Aviv, Israel$3.0M
Supercut46Video MessagingSan Francisco, United States
FreeDi28EnterpriseTel Aviv, Israel
Microsoft 36525Productivity SoftwareRedmond, United States
Etherwaves AI14Conversational AI
TeamSpeak10GamingChula Vista, United States- SCScalixEnterprise SoftwareOttawa, Canada
Microsoft TeamsCollaboration SoftwareRedmond, United States
Zoho Workplace56Productivity SoftwareChennai, India
Ask-AI54EnterpriseSan Francisco, United States$20.0M- YEYeo Messaging49CybersecurityLondon, United Kingdom$19.3M
OffSight47EnterpriseTel Aviv, Israel$1.0M
Emerj46Enterprise$1.8M
Zenzap41Messaging
Deskfirst35EnterpriseSan Francisco, United States- FUFuture of Work AI5Agentic AISan Francisco, United States
- GOGoogle Workspace AIAI Tools & AppsMountain View, United States
Open and AsyncAgentic AISan Francisco, United States$1.5M
Azeus ConveneEnterprise SoftwareTunis, Tunisia
Lark64HealthTechMountain View, United States$249.7M
Glia62Tallinn, Estonia$143.0M
Ando54Agentic AISan Francisco, United States$15.0M
Sidekick50Frontline Worker AI AssistantSan Francisco, United States$12.0M
Resonate48Agentic AISan Francisco, United States$10.0M
Superfy48PersonalNew York, United States$3.2M
Den44Agentic AISan Francisco, United States$6.3M
KoooEphemeral Messaging
Remote. TeamTeamwork PlatformValletta, Malta
Gainsight Customer Success70B2B SaaSSan Francisco, United States$405.3M
Litify61LegalTechNew York, United States$78.6M
Superhuman57ProductivitySan Francisco, United States$108.0M- COContractPod Technologies55LegalTechLondon, United Kingdom$220.0M
chamellio53LegalTechNew York, United States$10.0M
Office Timeline20Project Management SoftwareBellevue, United States- VEVemcon0Workflow AutomationTel Aviv, Israel$1.5M
Celonis85Process IntelligenceMunich, Germany$50.0M
Cvent85Event Management SoftwareTysons, United States$232.0M- FOFounders Fund85Venture CapitalSan Francisco, USA$19.9B
Atlassian85Enterprise SoftwareSydney, Australia$264.3M
Clio76LegalTechBurnaby, Canada$1.6B
Asana75SaaSSan Francisco, United States$50.0M
Grammarly74Artificial IntelligenceSan Francisco, United States$3.2B
Gong.io74Machine LearningSan Francisco, United States$944.1M
sprinklr69AINew York, United States$413.5M
Clari67Revenue OperationsSunnyvale, United States$496.0M
Smartsheet64Enterprise SoftwareBellevue, United States$52.1M
73 Strings64FintechParis, France$65.0M
Notion Labs64AISan Francisco, United States$525.0M
Flare63LegalTechSan Diego, United States$52.3M
Zappi63Market ResearchLondon, United Kingdom$31.0M
Signavio63Business Process ManagementBerlin, Germany$70.0M
Notion63SaaSSan Francisco, United States$200.0M- LILinkSquares62LegalTechBoston, United States$100.0M
Truecaller62MobileStockholm, Sweden$80.1M
Menlo Security61CybersecuritySunnyvale, USA$100.0M- NANasuni61SaaSBoston, United States$219.0M
- TRTricentis61SoftwareAustin, United States$1.5B
| Company | Sector | HQ | Funding | Score |
|---|---|---|---|---|
| Viktor | Artificial Intelligence | Warsaw, Poland | $66.2M | 62 |
| Synumatic | Enterprise | — | $1.0M | 33 |
| Lua Global | Agentic AI | San Francisco, United States | $15.8M | 55 |
| xFind.ai | Enterprise | Tel Aviv, Israel | $3.0M | 53 |
| Supercut | Video Messaging | San Francisco, United States | — | 46 |
| FreeDi | Enterprise | Tel Aviv, Israel | — | 28 |
| Microsoft 365 | Productivity Software | Redmond, United States | — | 25 |
| Etherwaves AI | Conversational AI | — | — | 14 |
| TeamSpeak | Gaming | Chula Vista, United States | — | 10 |
| SCScalix | Enterprise Software | Ottawa, Canada | — | — |
| Microsoft Teams | Collaboration Software | Redmond, United States | — | — |
| Zoho Workplace | Productivity Software | Chennai, India | — | 56 |
| Ask-AI | Enterprise | San Francisco, United States | $20.0M | 54 |
| YEYeo Messaging | Cybersecurity | London, United Kingdom | $19.3M | 49 |
| OffSight | Enterprise | Tel Aviv, Israel | $1.0M | 47 |
| Emerj | Enterprise | — | $1.8M | 46 |
| Zenzap | Messaging | — | — | 41 |
| Deskfirst | Enterprise | San Francisco, United States | — | 35 |
| FUFuture of Work AI | Agentic AI | San Francisco, United States | — | 5 |
| GOGoogle Workspace AI | AI Tools & Apps | Mountain View, United States | — | — |
| Open and Async | Agentic AI | San Francisco, United States | $1.5M | — |
| Azeus Convene | Enterprise Software | Tunis, Tunisia | — | — |
| Lark | HealthTech | Mountain View, United States | $249.7M | 64 |
| Glia | — | Tallinn, Estonia | $143.0M | 62 |
| Ando | Agentic AI | San Francisco, United States | $15.0M | 54 |
| Sidekick | Frontline Worker AI Assistant | San Francisco, United States | $12.0M | 50 |
| Resonate | Agentic AI | San Francisco, United States | $10.0M | 48 |
| Superfy | Personal | New York, United States | $3.2M | 48 |
| Den | Agentic AI | San Francisco, United States | $6.3M | 44 |
| Kooo | Ephemeral Messaging | — | — | — |
| Remote. Team | Teamwork Platform | Valletta, Malta | — | — |
| Gainsight Customer Success | B2B SaaS | San Francisco, United States | $405.3M | 70 |
| Litify | LegalTech | New York, United States | $78.6M | 61 |
| Superhuman | Productivity | San Francisco, United States | $108.0M | 57 |
| COContractPod Technologies | LegalTech | London, United Kingdom | $220.0M | 55 |
| chamellio | LegalTech | New York, United States | $10.0M | 53 |
| Office Timeline | Project Management Software | Bellevue, United States | — | 20 |
| VEVemcon | Workflow Automation | Tel Aviv, Israel | $1.5M | 0 |
| Celonis | Process Intelligence | Munich, Germany | $50.0M | 85 |
| Cvent | Event Management Software | Tysons, United States | $232.0M | 85 |
| FOFounders Fund | Venture Capital | San Francisco, USA | $19.9B | 85 |
| Atlassian | Enterprise Software | Sydney, Australia | $264.3M | 85 |
| Clio | LegalTech | Burnaby, Canada | $1.6B | 76 |
| Asana | SaaS | San Francisco, United States | $50.0M | 75 |
| Grammarly | Artificial Intelligence | San Francisco, United States | $3.2B | 74 |
| Gong.io | Machine Learning | San Francisco, United States | $944.1M | 74 |
| sprinklr | AI | New York, United States | $413.5M | 69 |
| Clari | Revenue Operations | Sunnyvale, United States | $496.0M | 67 |
| Smartsheet | Enterprise Software | Bellevue, United States | $52.1M | 64 |
| 73 Strings | Fintech | Paris, France | $65.0M | 64 |
| Notion Labs | AI | San Francisco, United States | $525.0M | 64 |
| Flare | LegalTech | San Diego, United States | $52.3M | 63 |
| Zappi | Market Research | London, United Kingdom | $31.0M | 63 |
| Signavio | Business Process Management | Berlin, Germany | $70.0M | 63 |
| Notion | SaaS | San Francisco, United States | $200.0M | 63 |
| LILinkSquares | LegalTech | Boston, United States | $100.0M | 62 |
| Truecaller | Mobile | Stockholm, Sweden | $80.1M | 62 |
| Menlo Security | Cybersecurity | Sunnyvale, USA | $100.0M | 61 |
| NANasuni | SaaS | Boston, United States | $219.0M | 61 |
| TRTricentis | Software | Austin, United States | $1.5B | 61 |