Open source focus
Open Source Alternatives to Prelap
60 open source Voice AI options similar to Prelap, 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
Coqui48Voice AIBerlin, Germany$2.0MOpen source · Self-hostable
Symbl.ai36Voice AISan Francisco, United States$6.4MOpen source
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
Resemble AI55Voice AINew York, United States$36.5MOpen source
Voca.ai54SpeechTel Aviv, Israel$6.1MOpen source
Vocode50Open SourceSan Francisco, United States$3.8MOpen source · Self-hostable
- COCognigy50Voice AgentDüsseldorf, Germany$156.5M
Open source
Lucida AI46Artificial IntelligenceSan Francisco, United States$7.0MOpen source
- OBoBot.ai45Conversational AITel Aviv, Israel$3.5M
Open source
Saperly43Voice AISan Francisco, United States$2.0MOpen source
Clara Ai40Conversational AISan Francisco, United StatesOpen source
Thenvoi AI Ltd31Conversational AILondon, United KingdomOpen source
Jako.ai20EnterpriseTel Aviv, IsraelOpen source
Lionwire17Voice AIOpen source
Metadialogues15Conversational AIOpen source
Etherwaves AI14Conversational AIOpen source
evo.ninja12Agentic AIOpen source
Appquest2Conversational AITel Aviv, IsraelOpen source
Google Cloud Text-to-SpeechVoice AIMountain View, United StatesOpen source
GetpointVoice AITel Aviv, IsraelOpen source
- CallrichVoice AI
Open source
SynchumanVoice AITel Aviv, IsraelOpen source
- FunbuttonVoice AI
Open source
IbodycamVoice AIOpen source
IntervyouAI AgentOpen source
DomulisConversational AILondon, United KingdomOpen source
Genesys Cloud CX64Contact Center AIDaly City, United States$3.9BOpen source
Nomi57AI CopilotSan Francisco, United States$180.0MOpen source
Meaning55Artificial IntelligenceTel Aviv, IsraelOpen source
regard54HealthcareSan Francisco, United StatesOpen source
Rasa49Conversational AIBerlin, Germany$13.0MOpen source · Self-hostable
- OBOBOt AI49Conversational AITel Aviv, Israel$5.0M
Open source
- SASales Interaction Agent47Agentic AISan Francisco, United States$5.0M
Open source
Hyper44Conversational AISan Francisco, United States$12.3MOpen source
- BLBlip41Voice AISão Paulo, Brazil$10.0M
Open source
Tryagentically40Agentic AISan Francisco, United StatesOpen source
Cekura40Agentic AITel Aviv, 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
Callbravo34Voice AITel Aviv, Israel$1.5MOpen source
Aquotiq32Conversational AILouth, United KingdomOpen source
Raincheck AI28Agentic AISan Francisco, United StatesOpen source
Magick AI28Agentic AIOpen source
Regai24Customer ServiceLondon, United KingdomOpen source
Corereflex22Customer Service AutomationTel Aviv, IsraelOpen source
- Anyvoice20Voice AI
Open source
Brieflow19Conversational AILondon, United KingdomOpen source
Zenthic15Conversational AISan Francisco, United StatesOpen source
Onenexa14Conversational AIOpen source
Convo10Voice AISan Francisco, United StatesOpen source
Axscore7Customer Service AutomationTel Aviv, IsraelOpen source
Afcor4Customer Service AutomationTel Aviv, IsraelOpen source
VyceraConversational AITel Aviv, IsraelOpen source
DhvanixVoice AIBengaluru, IndiaOpen source
| Company | Sector | License | HQ | Funding | Score |
|---|---|---|---|---|---|
| Cartesia | Voice AI | Open source | San Francisco, United States | $191.0M | 64 |
| Coqui | Voice AI | Open source · Self-hostable | Berlin, Germany | $2.0M | 48 |
| Symbl.ai | Voice AI | Open source | San Francisco, United States | $6.4M | 36 |
| 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 |
| Resemble AI | Voice AI | Open source | New York, United States | $36.5M | 55 |
| Voca.ai | Speech | Open source | Tel Aviv, Israel | $6.1M | 54 |
| Vocode | Open Source | Open source · Self-hostable | San Francisco, United States | $3.8M | 50 |
| COCognigy | Voice Agent | Open source | Düsseldorf, Germany | $156.5M | 50 |
| Lucida AI | Artificial Intelligence | Open source | San Francisco, United States | $7.0M | 46 |
| OBoBot.ai | Conversational AI | Open source | Tel Aviv, Israel | $3.5M | 45 |
| Saperly | Voice AI | Open source | San Francisco, United States | $2.0M | 43 |
| Clara Ai | Conversational AI | Open source | San Francisco, United States | — | 40 |
| Thenvoi AI Ltd | Conversational AI | Open source | London, United Kingdom | — | 31 |
| Jako.ai | Enterprise | Open source | Tel Aviv, Israel | — | 20 |
| Lionwire | Voice AI | Open source | — | — | 17 |
| Metadialogues | Conversational AI | Open source | — | — | 15 |
| Etherwaves AI | Conversational AI | Open source | — | — | 14 |
| evo.ninja | Agentic AI | Open source | — | — | 12 |
| Appquest | Conversational AI | Open source | Tel Aviv, Israel | — | 2 |
| Google Cloud Text-to-Speech | Voice AI | Open source | Mountain View, United States | — | — |
| Getpoint | Voice AI | Open source | Tel Aviv, Israel | — | — |
| Voice AI | Open source | — | — | — | |
| Synchuman | Voice AI | Open source | Tel Aviv, Israel | — | — |
| Voice AI | Open source | — | — | — | |
| Ibodycam | Voice AI | Open source | — | — | — |
| Intervyou | AI Agent | Open source | — | — | — |
| Domulis | Conversational AI | Open source | London, United Kingdom | — | — |
| Genesys Cloud CX | Contact Center AI | Open source | Daly City, United States | $3.9B | 64 |
| Nomi | AI Copilot | Open source | San Francisco, United States | $180.0M | 57 |
| Meaning | Artificial Intelligence | Open source | Tel Aviv, Israel | — | 55 |
| regard | Healthcare | Open source | San Francisco, United States | — | 54 |
| Rasa | Conversational AI | Open source · Self-hostable | Berlin, Germany | $13.0M | 49 |
| OBOBOt AI | Conversational AI | Open source | Tel Aviv, Israel | $5.0M | 49 |
| SASales Interaction Agent | Agentic AI | Open source | San Francisco, United States | $5.0M | 47 |
| Hyper | Conversational AI | Open source | San Francisco, United States | $12.3M | 44 |
| BLBlip | Voice AI | Open source | São Paulo, Brazil | $10.0M | 41 |
| Tryagentically | Agentic AI | Open source | San Francisco, United States | — | 40 |
| Cekura | Agentic AI | Open source | Tel Aviv, Israel | — | 40 |
| 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 |
| Callbravo | Voice AI | Open source | Tel Aviv, Israel | $1.5M | 34 |
| Aquotiq | Conversational AI | Open source | Louth, United Kingdom | — | 32 |
| Raincheck AI | Agentic AI | Open source | San Francisco, United States | — | 28 |
| Magick AI | Agentic AI | Open source | — | — | 28 |
| Regai | Customer Service | Open source | London, United Kingdom | — | 24 |
| Corereflex | Customer Service Automation | Open source | Tel Aviv, Israel | — | 22 |
| Voice AI | Open source | — | — | 20 | |
| Brieflow | Conversational AI | Open source | London, United Kingdom | — | 19 |
| Zenthic | Conversational AI | Open source | San Francisco, United States | — | 15 |
| Onenexa | Conversational AI | Open source | — | — | 14 |
| Convo | Voice AI | Open source | San Francisco, United States | — | 10 |
| Axscore | Customer Service Automation | Open source | Tel Aviv, Israel | — | 7 |
| Afcor | Customer Service Automation | Open source | Tel Aviv, Israel | — | 4 |
| Vycera | Conversational AI | Open source | Tel Aviv, Israel | — | — |
| Dhvanix | Voice AI | Open source | Bengaluru, India | — | — |