Open source focus
Open Source Alternatives to Kataruu
60 open source Voice AI options similar to Kataruu, 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.
Cartesia64Voice AISan Francisco, United States$191.0MOpen source
Resemble AI55Voice AINew York, United States$36.5MOpen source
Coqui48Voice AIBerlin, Germany$2.0MOpen source · Self-hostable
Lucida AI46Artificial IntelligenceSan Francisco, United States$7.0MOpen source
Symbl.ai36Voice AISan Francisco, United States$6.4MOpen source
IntervyouAI AgentOpen source
- FunbuttonVoice AI
Open source
Kyutai69Frontier AI LabParis, France$300.0MOpen source · Self-hostable
Vapi65Voice AISan Francisco, United States$74.3MOpen source
Bland64Voice AISan Francisco, United States$51.0MOpen source
Cognigy (NICE)63Voice AgentDüsseldorf, GermanyOpen source
Sendbird61Conversational AISan Mateo, United StatesOpen source
Nomi57AI CopilotSan Francisco, United States$180.0MOpen source
Voca.ai54SpeechTel Aviv, Israel$6.1MOpen source
- COCognigy50Voice AgentDüsseldorf, Germany$156.5M
Open source
Vocode50Open SourceSan Francisco, United States$3.8MOpen source · Self-hostable
Saperly43Voice AISan Francisco, United States$2.0MOpen source
Cekura40Agentic AITel Aviv, IsraelOpen source
Jako.ai20EnterpriseTel Aviv, IsraelOpen source
Lionwire17Voice AIOpen source
Metadialogues15Conversational AIOpen source
Mirrorfly11Agentic AIOpen source
Convo10Voice AISan Francisco, United StatesOpen source
IbodycamVoice AIOpen source
- CallrichVoice AI
Open source
SynchumanVoice AITel Aviv, IsraelOpen source
LingseeVoice AITel Aviv, IsraelOpen source
Google Cloud Text-to-SpeechVoice AIMountain View, United StatesOpen source
GetpointVoice AITel Aviv, IsraelOpen source
Weave70Voice AILehi, United StatesOpen source
Deepgram65NeocloudSan Francisco, United States$177.1MOpen source
Genesys Cloud CX64Contact Center AIDaly City, United States$3.9BOpen source
Rasa Technologies GmbH62Conversational AISan Francisco, United States$73.4MOpen source
Cluely58Agentic AISan Francisco, United StatesOpen source
Meaning55Artificial IntelligenceTel Aviv, IsraelOpen source
EyeControl54HealthcareTel Aviv, Israel$20.0MOpen source
regard54HealthcareSan Francisco, United StatesOpen source
- OBOBOt AI49Conversational AITel Aviv, Israel$5.0M
Open source
Rasa49Conversational AIBerlin, Germany$13.0MOpen source · Self-hostable
- SASales Interaction Agent47Agentic AISan Francisco, United States$5.0M
Open source
- OBoBot.ai45Conversational AITel Aviv, Israel$3.5M
Open source
- BLBlip41Voice AISão Paulo, Brazil$10.0M
Open source
Clara Ai40Conversational AISan Francisco, United StatesOpen source
Tryagentically40Agentic AISan Francisco, United StatesOpen source
FrontSpin38Sales TechnologySan Diego, United StatesOpen source
Mycroft35Voice AIKansas City, United States$121.5MOpen source · Self-hostable
Plurai34Conversational AITel Aviv, IsraelOpen source
Callbravo34Voice AITel Aviv, Israel$1.5MOpen source
CogMe33HealthcareTel Aviv, IsraelOpen source
Aquotiq32Conversational AILouth, United KingdomOpen source
Thenvoi AI Ltd31Conversational AILondon, United KingdomOpen source
SweetDream AI23AI GirlfriendIstanbul, TurkeyOpen source
Recallguru21AI Search EngineOpen source
- Anyvoice20Voice AI
Open source
Brieflow19Conversational AILondon, United KingdomOpen source
superwhisper17Artificial IntelligenceNew York, United StatesOpen source
Zenthic15Conversational AISan Francisco, United StatesOpen source
Etherwaves AI14Conversational AIOpen source
evo.ninja12Agentic AIOpen source
Fluentco9Voice AISan Francisco, United StatesOpen source
| Company | Sector | License | HQ | Funding | Score |
|---|---|---|---|---|---|
| Cartesia | Voice AI | Open source | San Francisco, United States | $191.0M | 64 |
| Resemble AI | Voice AI | Open source | New York, United States | $36.5M | 55 |
| Coqui | Voice AI | Open source · Self-hostable | Berlin, Germany | $2.0M | 48 |
| Lucida AI | Artificial Intelligence | Open source | San Francisco, United States | $7.0M | 46 |
| Symbl.ai | Voice AI | Open source | San Francisco, United States | $6.4M | 36 |
| Intervyou | AI Agent | Open source | — | — | — |
| Voice AI | Open source | — | — | — | |
| Kyutai | Frontier AI Lab | Open source · Self-hostable | Paris, France | $300.0M | 69 |
| Vapi | Voice AI | Open source | San Francisco, United States | $74.3M | 65 |
| Bland | Voice AI | Open source | San Francisco, United States | $51.0M | 64 |
| Cognigy (NICE) | Voice Agent | Open source | Düsseldorf, Germany | — | 63 |
| Sendbird | Conversational AI | Open source | San Mateo, United States | — | 61 |
| Nomi | AI Copilot | Open source | San Francisco, United States | $180.0M | 57 |
| Voca.ai | Speech | Open source | Tel Aviv, Israel | $6.1M | 54 |
| COCognigy | Voice Agent | Open source | Düsseldorf, Germany | $156.5M | 50 |
| Vocode | Open Source | Open source · Self-hostable | San Francisco, United States | $3.8M | 50 |
| Saperly | Voice AI | Open source | San Francisco, United States | $2.0M | 43 |
| Cekura | Agentic AI | Open source | Tel Aviv, Israel | — | 40 |
| Jako.ai | Enterprise | Open source | Tel Aviv, Israel | — | 20 |
| Lionwire | Voice AI | Open source | — | — | 17 |
| Metadialogues | Conversational AI | Open source | — | — | 15 |
| Mirrorfly | Agentic AI | Open source | — | — | 11 |
| Convo | Voice AI | Open source | San Francisco, United States | — | 10 |
| Ibodycam | Voice AI | Open source | — | — | — |
| Voice AI | Open source | — | — | — | |
| Synchuman | Voice AI | Open source | Tel Aviv, Israel | — | — |
| Lingsee | Voice AI | Open source | Tel Aviv, Israel | — | — |
| Google Cloud Text-to-Speech | Voice AI | Open source | Mountain View, United States | — | — |
| Getpoint | Voice AI | Open source | Tel Aviv, Israel | — | — |
| Weave | Voice AI | Open source | Lehi, United States | — | 70 |
| Deepgram | Neocloud | Open source | San Francisco, United States | $177.1M | 65 |
| Genesys Cloud CX | Contact Center AI | Open source | Daly City, United States | $3.9B | 64 |
| Rasa Technologies GmbH | Conversational AI | Open source | San Francisco, United States | $73.4M | 62 |
| Cluely | Agentic AI | Open source | San Francisco, United States | — | 58 |
| Meaning | Artificial Intelligence | Open source | Tel Aviv, Israel | — | 55 |
| EyeControl | Healthcare | Open source | Tel Aviv, Israel | $20.0M | 54 |
| regard | Healthcare | Open source | San Francisco, United States | — | 54 |
| OBOBOt AI | Conversational AI | Open source | Tel Aviv, Israel | $5.0M | 49 |
| Rasa | Conversational AI | Open source · Self-hostable | Berlin, Germany | $13.0M | 49 |
| SASales Interaction Agent | Agentic AI | Open source | San Francisco, United States | $5.0M | 47 |
| OBoBot.ai | Conversational AI | Open source | Tel Aviv, Israel | $3.5M | 45 |
| 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 |
| FrontSpin | Sales Technology | Open source | San Diego, United States | — | 38 |
| Mycroft | Voice AI | Open source · Self-hostable | Kansas City, United States | $121.5M | 35 |
| Plurai | Conversational AI | Open source | Tel Aviv, Israel | — | 34 |
| Callbravo | Voice AI | Open source | Tel Aviv, Israel | $1.5M | 34 |
| CogMe | Healthcare | Open source | Tel Aviv, Israel | — | 33 |
| Aquotiq | Conversational AI | Open source | Louth, United Kingdom | — | 32 |
| Thenvoi AI Ltd | Conversational AI | Open source | London, United Kingdom | — | 31 |
| SweetDream AI | AI Girlfriend | Open source | Istanbul, Turkey | — | 23 |
| Recallguru | AI Search Engine | Open source | — | — | 21 |
| Voice AI | Open source | — | — | 20 | |
| Brieflow | Conversational AI | Open source | London, United Kingdom | — | 19 |
| superwhisper | Artificial Intelligence | Open source | New York, United States | — | 17 |
| Zenthic | Conversational AI | Open source | San Francisco, United States | — | 15 |
| Etherwaves AI | Conversational AI | Open source | — | — | 14 |
| evo.ninja | Agentic AI | Open source | — | — | 12 |
| Fluentco | Voice AI | Open source | San Francisco, United States | — | 9 |