Open source focus
Open Source Alternatives to Bulkcall
60 open source Voice AI options similar to Bulkcall, 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.
DhvanixVoice AIBengaluru, IndiaOpen source
LetustalkVoice AIOpen source
Saperly43Voice AISan Francisco, United States$2.0MOpen source
Mirrorfly11Agentic AIOpen source
Mister WolfAgentic AITel Aviv, IsraelOpen source
CallanoConversational AITel Aviv, IsraelOpen source
- Chisp TechnologiesConversational AITel Aviv, Israel
Open source
Bland64Voice AISan Francisco, United States$51.0MOpen source
Callbravo34Voice AITel Aviv, Israel$1.5MOpen source
Aquotiq32Conversational AILouth, United KingdomOpen source
- CallrichVoice AI
Open source
GetpointVoice AITel Aviv, IsraelOpen source
TelenowVoice AISan Francisco, United StatesOpen source
RevochatConversational AIOpen source
Cognigy (NICE)63Voice AgentDüsseldorf, GermanyOpen source
Voca.ai54SpeechTel Aviv, Israel$6.1MOpen source
- COCognigy50Voice AgentDüsseldorf, Germany$156.5M
Open source
- OBOBOt AI49Conversational AITel Aviv, Israel$5.0M
Open source
- SASales Interaction Agent47Agentic AISan Francisco, United States$5.0M
Open source
- BLBlip41Voice AISão Paulo, Brazil$10.0M
Open source
Cekura40Agentic AITel Aviv, IsraelOpen source
Lionwire17Voice AIOpen source
Zenthic15Conversational AISan Francisco, United StatesOpen source
- QmogConversational AI
Open source
ConveyaiConversational AITel Aviv, IsraelOpen source
Vapi65Voice AISan Francisco, United States$74.3MOpen source
Genesys Cloud CX64Contact Center AIDaly City, United States$3.9BOpen source
Sendbird61Conversational AISan Mateo, United StatesOpen source
Nomi57AI CopilotSan Francisco, United States$180.0MOpen source
Rasa49Conversational AIBerlin, Germany$13.0MOpen source · Self-hostable
- OBoBot.ai45Conversational AITel Aviv, Israel$3.5M
Open source
Bluebutler42Customer Service AutomationTel Aviv, Israel$12.0MOpen source
Clara Ai40Conversational AISan Francisco, United StatesOpen source
Tryagentically40Agentic AISan Francisco, United StatesOpen source
Plurai34Conversational AITel Aviv, IsraelOpen source
Thenvoi AI Ltd31Conversational AILondon, United KingdomOpen source
Metadialogues15Conversational AIOpen source
Darim14Conversational AIOpen source
Appquest2Conversational AITel Aviv, IsraelOpen source
ZentokConversational AITel Aviv, IsraelOpen source
MoriwaConversational AIOpen source
ScalinaConversational AIOpen source
KotokuConversational AITel Aviv, IsraelOpen source
XallarapConversational AIOpen source
DomulisConversational AILondon, United KingdomOpen source
MaiqaConversational AIOpen source
IbodycamVoice AIOpen source
AsqsConversational AITel Aviv, IsraelOpen source
KaaiaConversational AITel Aviv, IsraelOpen source
FlintgptConversational AIOpen source
- PipclawAI Agent
Open source
Weave70Voice AILehi, United StatesOpen source
Resemble AI55Voice AINew York, United States$36.5MOpen source
Vocode50Open SourceSan Francisco, United States$3.8MOpen source · Self-hostable
Coqui48Voice AIBerlin, Germany$2.0MOpen source · Self-hostable
Hyper44Conversational AISan Francisco, United States$12.3MOpen source
- RERefold AI39Customer Service AutomationLondon, United Kingdom$6.5M
Open source
Symbl.ai36Voice AISan Francisco, United States$6.4MOpen source
Akacia35Conversational AITel Aviv, Israel$1.5MOpen source
Aengus35Conversational AISan Francisco, United StatesOpen source
| Company | Sector | License | HQ | Funding | Score |
|---|---|---|---|---|---|
| Dhvanix | Voice AI | Open source | Bengaluru, India | — | — |
| Letustalk | Voice AI | Open source | — | — | — |
| Saperly | Voice AI | Open source | San Francisco, United States | $2.0M | 43 |
| Mirrorfly | Agentic AI | Open source | — | — | 11 |
| Mister Wolf | Agentic AI | Open source | Tel Aviv, Israel | — | — |
| Callano | Conversational AI | Open source | Tel Aviv, Israel | — | — |
| Conversational AI | Open source | Tel Aviv, Israel | — | — | |
| Bland | Voice AI | Open source | San Francisco, United States | $51.0M | 64 |
| Callbravo | Voice AI | Open source | Tel Aviv, Israel | $1.5M | 34 |
| Aquotiq | Conversational AI | Open source | Louth, United Kingdom | — | 32 |
| Voice AI | Open source | — | — | — | |
| Getpoint | Voice AI | Open source | Tel Aviv, Israel | — | — |
| Telenow | Voice AI | Open source | San Francisco, United States | — | — |
| Revochat | Conversational AI | Open source | — | — | — |
| Cognigy (NICE) | Voice Agent | Open source | Düsseldorf, Germany | — | 63 |
| Voca.ai | Speech | Open source | Tel Aviv, Israel | $6.1M | 54 |
| COCognigy | Voice Agent | Open source | Düsseldorf, Germany | $156.5M | 50 |
| 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 |
| BLBlip | Voice AI | Open source | São Paulo, Brazil | $10.0M | 41 |
| Cekura | Agentic AI | Open source | Tel Aviv, Israel | — | 40 |
| Lionwire | Voice AI | Open source | — | — | 17 |
| Zenthic | Conversational AI | Open source | San Francisco, United States | — | 15 |
| Conversational AI | Open source | — | — | — | |
| Conveyai | Conversational AI | Open source | Tel Aviv, Israel | — | — |
| Vapi | Voice AI | Open source | San Francisco, United States | $74.3M | 65 |
| Genesys Cloud CX | Contact Center AI | Open source | Daly City, United States | $3.9B | 64 |
| Sendbird | Conversational AI | Open source | San Mateo, United States | — | 61 |
| Nomi | AI Copilot | Open source | San Francisco, United States | $180.0M | 57 |
| Rasa | Conversational AI | Open source · Self-hostable | Berlin, Germany | $13.0M | 49 |
| OBoBot.ai | Conversational AI | Open source | Tel Aviv, Israel | $3.5M | 45 |
| Bluebutler | Customer Service Automation | Open source | Tel Aviv, Israel | $12.0M | 42 |
| Clara Ai | Conversational AI | Open source | San Francisco, United States | — | 40 |
| Tryagentically | Agentic AI | Open source | San Francisco, United States | — | 40 |
| Plurai | Conversational AI | Open source | Tel Aviv, Israel | — | 34 |
| Thenvoi AI Ltd | Conversational AI | Open source | London, United Kingdom | — | 31 |
| Metadialogues | Conversational AI | Open source | — | — | 15 |
| Darim | Conversational AI | Open source | — | — | 14 |
| Appquest | Conversational AI | Open source | Tel Aviv, Israel | — | 2 |
| Zentok | Conversational AI | Open source | Tel Aviv, Israel | — | — |
| Moriwa | Conversational AI | Open source | — | — | — |
| Scalina | Conversational AI | Open source | — | — | — |
| Kotoku | Conversational AI | Open source | Tel Aviv, Israel | — | — |
| Xallarap | Conversational AI | Open source | — | — | — |
| Domulis | Conversational AI | Open source | London, United Kingdom | — | — |
| Maiqa | Conversational AI | Open source | — | — | — |
| Ibodycam | Voice AI | Open source | — | — | — |
| Asqs | Conversational AI | Open source | Tel Aviv, Israel | — | — |
| Kaaia | Conversational AI | Open source | Tel Aviv, Israel | — | — |
| Flintgpt | Conversational AI | Open source | — | — | — |
| AI Agent | Open source | — | — | — | |
| Weave | Voice AI | Open source | Lehi, United States | — | 70 |
| Resemble AI | Voice AI | Open source | New York, United States | $36.5M | 55 |
| Vocode | Open Source | Open source · Self-hostable | San Francisco, United States | $3.8M | 50 |
| Coqui | Voice AI | Open source · Self-hostable | Berlin, Germany | $2.0M | 48 |
| Hyper | Conversational AI | Open source | San Francisco, United States | $12.3M | 44 |
| RERefold AI | Customer Service Automation | Open source | London, United Kingdom | $6.5M | 39 |
| Symbl.ai | Voice AI | Open source | San Francisco, United States | $6.4M | 36 |
| Akacia | Conversational AI | Open source | Tel Aviv, Israel | $1.5M | 35 |
| Aengus | Conversational AI | Open source | San Francisco, United States | — | 35 |