Open source focus
Open Source Alternatives to Adifferentangle
60 open source Voice AI options similar to Adifferentangle, 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.
Sendbird61Conversational AISan Mateo, United StatesOpen source
Saperly43Voice AISan Francisco, United States$2.0MOpen source
Lionwire17Voice AIOpen source
GetpointVoice AITel Aviv, IsraelOpen source
IbodycamVoice AIOpen source
- CallrichVoice AI
Open source
Vapi65Voice AISan Francisco, United States$74.3MOpen source
Bland64Voice AISan Francisco, United States$51.0MOpen source
Cartesia64Voice AISan Francisco, United States$191.0MOpen source
Cognigy (NICE)63Voice AgentDüsseldorf, GermanyOpen 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
Symbl.ai36Voice AISan Francisco, United States$6.4MOpen source
Jako.ai20EnterpriseTel Aviv, IsraelOpen source
Metadialogues15Conversational AIOpen source
Convo10Voice AISan Francisco, United StatesOpen source
SynchumanVoice AITel Aviv, IsraelOpen source
- FunbuttonVoice AI
Open source
Kyutai69Frontier AI LabParis, France$300.0MOpen source · Self-hostable
Deepgram65NeocloudSan Francisco, United States$177.1MOpen source
Meaning55Artificial IntelligenceTel Aviv, IsraelOpen source
Resemble AI55Voice AINew York, United States$36.5MOpen source
Coqui48Voice AIBerlin, Germany$2.0MOpen source · Self-hostable
Cekura40Agentic AITel Aviv, IsraelOpen source
Mirrorfly11Agentic AIOpen source
LingseeVoice AITel Aviv, IsraelOpen source
Google Cloud Text-to-SpeechVoice AIMountain View, United StatesOpen source
IntervyouAI AgentOpen source
Genesys Cloud CX64Contact Center AIDaly City, United States$3.9BOpen 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
Tryagentically40Agentic AISan Francisco, United StatesOpen source
Clara Ai40Conversational AISan Francisco, United StatesOpen source
Callbravo34Voice AITel Aviv, Israel$1.5MOpen source
Plurai34Conversational AITel Aviv, IsraelOpen source
Aquotiq32Conversational AILouth, United KingdomOpen source
Thenvoi AI Ltd31Conversational AILondon, United KingdomOpen 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
Appquest2Conversational AITel Aviv, IsraelOpen source
Mister WolfAgentic AITel Aviv, IsraelOpen source
- AimicrophoneVoice AITel Aviv, Israel
Open source
KotokuConversational AITel Aviv, IsraelOpen source
RevochatConversational AIOpen source
ScalinaConversational AIOpen source
TelenowVoice AISan Francisco, United StatesOpen source
- Chisp TechnologiesConversational AITel Aviv, Israel
Open source
DhvanixVoice AIBengaluru, IndiaOpen source
DomulisConversational AILondon, United KingdomOpen source
KaaiaConversational AITel Aviv, IsraelOpen source
| Company | Sector | License | HQ | Funding | Score |
|---|---|---|---|---|---|
| Sendbird | Conversational AI | Open source | San Mateo, United States | — | 61 |
| Saperly | Voice AI | Open source | San Francisco, United States | $2.0M | 43 |
| Lionwire | Voice AI | Open source | — | — | 17 |
| Getpoint | Voice AI | Open source | Tel Aviv, Israel | — | — |
| Ibodycam | Voice AI | Open source | — | — | — |
| Voice AI | Open source | — | — | — | |
| Vapi | Voice AI | Open source | San Francisco, United States | $74.3M | 65 |
| Bland | Voice AI | Open source | San Francisco, United States | $51.0M | 64 |
| Cartesia | Voice AI | Open source | San Francisco, United States | $191.0M | 64 |
| Cognigy (NICE) | Voice Agent | Open source | Düsseldorf, Germany | — | 63 |
| 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 |
| Symbl.ai | Voice AI | Open source | San Francisco, United States | $6.4M | 36 |
| Jako.ai | Enterprise | Open source | Tel Aviv, Israel | — | 20 |
| Metadialogues | Conversational AI | Open source | — | — | 15 |
| Convo | Voice AI | Open source | San Francisco, United States | — | 10 |
| Synchuman | Voice AI | Open source | Tel Aviv, Israel | — | — |
| Voice AI | Open source | — | — | — | |
| Kyutai | Frontier AI Lab | Open source · Self-hostable | Paris, France | $300.0M | 69 |
| Deepgram | Neocloud | Open source | San Francisco, United States | $177.1M | 65 |
| Meaning | Artificial Intelligence | Open source | Tel Aviv, Israel | — | 55 |
| 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 |
| Cekura | Agentic AI | Open source | Tel Aviv, Israel | — | 40 |
| Mirrorfly | Agentic AI | Open source | — | — | 11 |
| Lingsee | Voice AI | Open source | Tel Aviv, Israel | — | — |
| Google Cloud Text-to-Speech | Voice AI | Open source | Mountain View, United States | — | — |
| Intervyou | AI Agent | Open source | — | — | — |
| Genesys Cloud CX | Contact Center AI | Open source | Daly City, United States | $3.9B | 64 |
| 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 |
| Tryagentically | Agentic AI | Open source | San Francisco, United States | — | 40 |
| Clara Ai | Conversational AI | Open source | San Francisco, United States | — | 40 |
| Callbravo | Voice AI | Open source | Tel Aviv, Israel | $1.5M | 34 |
| Plurai | Conversational AI | Open source | Tel Aviv, Israel | — | 34 |
| Aquotiq | Conversational AI | Open source | Louth, United Kingdom | — | 32 |
| Thenvoi AI Ltd | Conversational AI | Open source | London, United Kingdom | — | 31 |
| 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 |
| Appquest | Conversational AI | Open source | Tel Aviv, Israel | — | 2 |
| Mister Wolf | Agentic AI | Open source | Tel Aviv, Israel | — | — |
| Voice AI | Open source | Tel Aviv, Israel | — | — | |
| Kotoku | Conversational AI | Open source | Tel Aviv, Israel | — | — |
| Revochat | Conversational AI | Open source | — | — | — |
| Scalina | Conversational AI | Open source | — | — | — |
| Telenow | Voice AI | Open source | San Francisco, United States | — | — |
| Conversational AI | Open source | Tel Aviv, Israel | — | — | |
| Dhvanix | Voice AI | Open source | Bengaluru, India | — | — |
| Domulis | Conversational AI | Open source | London, United Kingdom | — | — |
| Kaaia | Conversational AI | Open source | Tel Aviv, Israel | — | — |