Open source focus
Open Source Alternatives to Kooo
60 open source Ephemeral Messaging options similar to Kooo, ranked by named competitors first, sector overlap, and our 0-100 AI-readiness score. Each profile notes license and self-hosting where we have it.
OpenAI84Artificial IntelligenceSan Francisco, United States$493.9BOpen source
Chai Research58AI CompanionPalo Alto, United States$55.0MOpen source
Chai56AI ChatbotSan Francisco, United States$60.0MOpen source
evo.ninja12Agentic AIOpen source
PrivateGPT5AI Search EngineToronto, CanadaOpen source · Self-hostable
Tosly.onlineAgentic AIOpen source
- FunbuttonVoice AI
Open source
Thiomi LughaEdTechOpen source
Off GridEdge AIOpen source · Self-hostable
GoumiFoundation ModelBeaverton, United StatesOpen source
SpaceXAI76Frontier AI LabPalo Alto, United States$90.0BOpen source
Osaurus71Artificial IntelligenceSan Francisco, USA$63.0MOpen source
Arena71Artificial IntelligenceBerkeley, USA$250.0MOpen source
Perplexity AI71Search EngineSan Francisco, United States$591.4MOpen source
Vapi65Voice AISan Francisco, United States$74.3MOpen source
Cartesia64Voice AISan Francisco, United States$191.0MOpen source
Bland64Voice AISan Francisco, United States$51.0MOpen source
Genesys Cloud CX64Contact Center AIDaly City, United States$3.9BOpen source
Cognigy (NICE)63Voice AgentDüsseldorf, GermanyOpen source
Sendbird61Conversational AISan Mateo, United StatesOpen source
CHAI: AI Platform56AI InfrastructurePalo Alto, United States$3.7MOpen source
Resemble AI55Voice AINew York, United States$36.5MOpen source
Meaning55Artificial IntelligenceTel Aviv, IsraelOpen source
Leo54FintechNew York, United States$6.6MOpen source
regard54HealthcareSan Francisco, United StatesOpen source
Anon53Agentic AI$6.5MOpen source
Vocode50Open SourceSan Francisco, United States$3.8MOpen source · Self-hostable
- COCognigy50Voice AgentDüsseldorf, Germany$156.5M
Open source
- OBOBOt AI49Conversational AITel Aviv, Israel$5.0M
Open source
bolt.new49AI Coding AssistantSan Francisco, United StatesOpen source
Rasa49Conversational AIBerlin, Germany$13.0MOpen source · Self-hostable
Sentry48AI Tools & Apps$1.0MOpen source
Coqui48Voice AIBerlin, Germany$2.0MOpen source · Self-hostable
- SASales Interaction Agent47Agentic AISan Francisco, United States$5.0M
Open source
Zed46Agentic AISan Francisco, United States$95.5MOpen source
- OBoBot.ai45Conversational AITel Aviv, Israel$3.5M
Open source
Dante45Artificial Intelligence$1.5MOpen source
Outlit45Agentic AI$500KOpen source
Hyper44Conversational AISan Francisco, United States$12.3MOpen source
Base4444No CodeTel Aviv, IsraelOpen source
Saperly43Voice AISan Francisco, United States$2.0MOpen source
- Why-Health42Productivity
Open source
- BLBlip41Voice AISão Paulo, Brazil$10.0M
Open source
Clara Ai40Conversational AISan Francisco, United StatesOpen source
Tryagentically40Agentic AISan Francisco, United StatesOpen source
Poseidon36Decentralized IdentityTel Aviv, Israel$18.0MOpen source
Answers36AI Search EngineSan Francisco, United States$1.5BOpen source
Symbl.ai36Voice AISan Francisco, United States$6.4MOpen source
Noumena AI35Agentic AIתל אביב - יפו, IsraelOpen source
Aengus35Conversational AISan Francisco, United StatesOpen source
Akacia35Conversational AITel Aviv, Israel$1.5MOpen source
Tavvo34Conversational AITel Aviv, Israel$4.0MOpen source
Plurai34Conversational AITel Aviv, IsraelOpen source
Pluum34Travel TechTel Aviv, IsraelOpen source
Callbravo34Voice AITel Aviv, Israel$1.5MOpen source
DeepAI33AI Image GenerationSan Francisco, United StatesOpen source
Opactor33Agentic AISan Francisco, United StatesOpen source
Aquotiq32Conversational AILouth, United KingdomOpen source
Andraste32Agentic AISan Francisco, United StatesOpen source
Thenvoi AI Ltd31Conversational AILondon, United KingdomOpen source
| Company | Sector | License | HQ | Funding | Score | Website |
|---|---|---|---|---|---|---|
| OpenAI | Artificial Intelligence | Open source | San Francisco, United States | $493.9B | 84 | |
| Chai Research | AI Companion | Open source | Palo Alto, United States | $55.0M | 58 | |
| Chai | AI Chatbot | Open source | San Francisco, United States | $60.0M | 56 | |
| evo.ninja | Agentic AI | Open source | — | — | 12 | |
| PrivateGPT | AI Search Engine | Open source · Self-hostable | Toronto, Canada | — | 5 | |
| Tosly.online | Agentic AI | Open source | — | — | — | |
| Voice AI | Open source | — | — | — | ||
| Thiomi Lugha | EdTech | Open source | — | — | — | |
| Off Grid | Edge AI | Open source · Self-hostable | — | — | — | |
| Goumi | Foundation Model | Open source | Beaverton, United States | — | — | |
| SpaceXAI | Frontier AI Lab | Open source | Palo Alto, United States | $90.0B | 76 | |
| Osaurus | Artificial Intelligence | Open source | San Francisco, USA | $63.0M | 71 | |
| Arena | Artificial Intelligence | Open source | Berkeley, USA | $250.0M | 71 | |
| Perplexity AI | Search Engine | Open source | San Francisco, United States | $591.4M | 71 | |
| Vapi | Voice AI | Open source | San Francisco, United States | $74.3M | 65 | |
| Cartesia | Voice AI | Open source | San Francisco, United States | $191.0M | 64 | |
| Bland | Voice AI | Open source | San Francisco, United States | $51.0M | 64 | |
| Genesys Cloud CX | Contact Center AI | Open source | Daly City, United States | $3.9B | 64 | |
| Cognigy (NICE) | Voice Agent | Open source | Düsseldorf, Germany | — | 63 | |
| Sendbird | Conversational AI | Open source | San Mateo, United States | — | 61 | |
| CHAI: AI Platform | AI Infrastructure | Open source | Palo Alto, United States | $3.7M | 56 | |
| Resemble AI | Voice AI | Open source | New York, United States | $36.5M | 55 | |
| Meaning | Artificial Intelligence | Open source | Tel Aviv, Israel | — | 55 | |
| Leo | Fintech | Open source | New York, United States | $6.6M | 54 | |
| regard | Healthcare | Open source | San Francisco, United States | — | 54 | |
| Anon | Agentic AI | Open source | — | $6.5M | 53 | |
| Vocode | Open Source | Open source · Self-hostable | San Francisco, United States | $3.8M | 50 | |
| COCognigy | Voice Agent | Open source | Düsseldorf, Germany | $156.5M | 50 | |
| OBOBOt AI | Conversational AI | Open source | Tel Aviv, Israel | $5.0M | 49 | |
| bolt.new | AI Coding Assistant | Open source | San Francisco, United States | — | 49 | |
| Rasa | Conversational AI | Open source · Self-hostable | Berlin, Germany | $13.0M | 49 | |
| Sentry | AI Tools & Apps | Open source | — | $1.0M | 48 | |
| Coqui | Voice AI | Open source · Self-hostable | Berlin, Germany | $2.0M | 48 | |
| SASales Interaction Agent | Agentic AI | Open source | San Francisco, United States | $5.0M | 47 | |
| Zed | Agentic AI | Open source | San Francisco, United States | $95.5M | 46 | |
| OBoBot.ai | Conversational AI | Open source | Tel Aviv, Israel | $3.5M | 45 | |
| Dante | Artificial Intelligence | Open source | — | $1.5M | 45 | |
| Outlit | Agentic AI | Open source | — | $500K | 45 | |
| Hyper | Conversational AI | Open source | San Francisco, United States | $12.3M | 44 | |
| Base44 | No Code | Open source | Tel Aviv, Israel | — | 44 | |
| Saperly | Voice AI | Open source | San Francisco, United States | $2.0M | 43 | |
| Productivity | Open source | — | — | 42 | ||
| BLBlip | Voice AI | Open source | São Paulo, Brazil | $10.0M | 41 | |
| Clara Ai | Conversational AI | Open source | San Francisco, United States | — | 40 | |
| Tryagentically | Agentic AI | Open source | San Francisco, United States | — | 40 | |
| Poseidon | Decentralized Identity | Open source | Tel Aviv, Israel | $18.0M | 36 | |
| Answers | AI Search Engine | Open source | San Francisco, United States | $1.5B | 36 | |
| Symbl.ai | Voice AI | Open source | San Francisco, United States | $6.4M | 36 | |
| Noumena AI | Agentic AI | Open source | תל אביב - יפו, Israel | — | 35 | |
| Aengus | Conversational AI | Open source | San Francisco, United States | — | 35 | |
| Akacia | Conversational AI | Open source | Tel Aviv, Israel | $1.5M | 35 | |
| Tavvo | Conversational AI | Open source | Tel Aviv, Israel | $4.0M | 34 | |
| Plurai | Conversational AI | Open source | Tel Aviv, Israel | — | 34 | |
| Pluum | Travel Tech | Open source | Tel Aviv, Israel | — | 34 | |
| Callbravo | Voice AI | Open source | Tel Aviv, Israel | $1.5M | 34 | |
| DeepAI | AI Image Generation | Open source | San Francisco, United States | — | 33 | |
| Opactor | Agentic AI | Open source | San Francisco, United States | — | 33 | |
| Aquotiq | Conversational AI | Open source | Louth, United Kingdom | — | 32 | |
| Andraste | Agentic AI | Open source | San Francisco, United States | — | 32 | |
| Thenvoi AI Ltd | Conversational AI | Open source | London, United Kingdom | — | 31 |