Open source focus
Open Source Alternatives to Carlum
60 open source Voice AI options similar to Carlum, 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.
Saperly43Voice AISan Francisco, United States$2.0MOpen source
GetpointVoice AITel Aviv, IsraelOpen source
- CallrichVoice AI
Open source
Lionwire17Voice AIOpen source
Mirrorfly11Agentic AIOpen source
IbodycamVoice AIOpen source
Bland64Voice AISan Francisco, United States$51.0MOpen source
Voca.ai54SpeechTel Aviv, Israel$6.1MOpen source
TelenowVoice AISan Francisco, United StatesOpen source
LetustalkVoice AIOpen source
Mister WolfAgentic AITel Aviv, IsraelOpen source
DhvanixVoice AIBengaluru, IndiaOpen source
Vapi65Voice AISan Francisco, United States$74.3MOpen source
Cognigy (NICE)63Voice AgentDüsseldorf, GermanyOpen source
Sendbird61Conversational AISan Mateo, United StatesOpen source
- COCognigy50Voice AgentDüsseldorf, Germany$156.5M
Open source
Cekura40Agentic AITel Aviv, IsraelOpen source
RevochatConversational AIOpen source
- Chisp TechnologiesConversational AITel Aviv, Israel
Open source
Vocode50Open SourceSan Francisco, United States$3.8MOpen source · Self-hostable
- SASales Interaction Agent47Agentic AISan Francisco, United States$5.0M
Open source
Callbravo34Voice AITel Aviv, Israel$1.5MOpen source
Aquotiq32Conversational AILouth, United KingdomOpen source
Metadialogues15Conversational AIOpen source
CallanoConversational AITel Aviv, IsraelOpen source
Nomi57AI CopilotSan Francisco, United States$180.0MOpen source
- OBOBOt AI49Conversational AITel Aviv, Israel$5.0M
Open source
Coqui48Voice AIBerlin, Germany$2.0MOpen source · Self-hostable
- BLBlip41Voice AISão Paulo, Brazil$10.0M
Open source
Tryagentically40Agentic AISan Francisco, United StatesOpen source
Symbl.ai36Voice AISan Francisco, United States$6.4MOpen source
Jako.ai20EnterpriseTel Aviv, IsraelOpen source
Zenthic15Conversational AISan Francisco, United StatesOpen source
Google Cloud Text-to-SpeechVoice AIMountain View, United StatesOpen source
SynchumanVoice AITel Aviv, IsraelOpen source
Genesys Cloud CX64Contact Center AIDaly City, United States$3.9BOpen source
Meaning55Artificial IntelligenceTel Aviv, IsraelOpen source
- OBoBot.ai45Conversational AITel Aviv, Israel$3.5M
Open source
Hyper44Conversational AISan Francisco, United States$12.3MOpen source
Bluebutler42Customer Service AutomationTel Aviv, Israel$12.0MOpen source
Clara Ai40Conversational AISan Francisco, United StatesOpen source
Plurai34Conversational AITel Aviv, IsraelOpen source
Thenvoi AI Ltd31Conversational AILondon, United KingdomOpen source
Raincheck AI28Agentic AISan Francisco, United StatesOpen source
Corereflex22Customer Service AutomationTel Aviv, IsraelOpen source
Darim14Conversational AIOpen source
Convo10Voice AISan Francisco, United StatesOpen source
Appquest2Conversational AITel Aviv, IsraelOpen source
ZentokConversational AITel Aviv, IsraelOpen source
ConveyaiConversational AITel Aviv, IsraelOpen source
DomulisConversational AILondon, United KingdomOpen source
MoriwaConversational AIOpen source
FlintgptConversational AIOpen source
PiaceAgentic AITel Aviv, IsraelOpen source
ScalinaConversational AIOpen source
MaiqaConversational AIOpen source
KotokuConversational AITel Aviv, IsraelOpen source
- KlozioAgentic AISan Francisco, United States
Open source
XallarapConversational AIOpen source
AsqsConversational AITel Aviv, IsraelOpen source
| Company | Sector | License | HQ | Funding | Score |
|---|---|---|---|---|---|
| Saperly | Voice AI | Open source | San Francisco, United States | $2.0M | 43 |
| Getpoint | Voice AI | Open source | Tel Aviv, Israel | — | — |
| Voice AI | Open source | — | — | — | |
| Lionwire | Voice AI | Open source | — | — | 17 |
| Mirrorfly | Agentic AI | Open source | — | — | 11 |
| Ibodycam | Voice AI | Open source | — | — | — |
| Bland | Voice AI | Open source | San Francisco, United States | $51.0M | 64 |
| Voca.ai | Speech | Open source | Tel Aviv, Israel | $6.1M | 54 |
| Telenow | Voice AI | Open source | San Francisco, United States | — | — |
| Letustalk | Voice AI | Open source | — | — | — |
| Mister Wolf | Agentic AI | Open source | Tel Aviv, Israel | — | — |
| Dhvanix | Voice AI | Open source | Bengaluru, India | — | — |
| Vapi | Voice AI | Open source | San Francisco, United States | $74.3M | 65 |
| Cognigy (NICE) | Voice Agent | Open source | Düsseldorf, Germany | — | 63 |
| Sendbird | Conversational AI | Open source | San Mateo, United States | — | 61 |
| COCognigy | Voice Agent | Open source | Düsseldorf, Germany | $156.5M | 50 |
| Cekura | Agentic AI | Open source | Tel Aviv, Israel | — | 40 |
| Revochat | Conversational AI | Open source | — | — | — |
| Conversational AI | Open source | Tel Aviv, Israel | — | — | |
| Vocode | Open Source | Open source · Self-hostable | San Francisco, United States | $3.8M | 50 |
| SASales Interaction Agent | Agentic AI | Open source | San Francisco, United States | $5.0M | 47 |
| Callbravo | Voice AI | Open source | Tel Aviv, Israel | $1.5M | 34 |
| Aquotiq | Conversational AI | Open source | Louth, United Kingdom | — | 32 |
| Metadialogues | Conversational AI | Open source | — | — | 15 |
| Callano | Conversational AI | Open source | Tel Aviv, Israel | — | — |
| Nomi | AI Copilot | Open source | San Francisco, United States | $180.0M | 57 |
| OBOBOt AI | Conversational AI | Open source | Tel Aviv, Israel | $5.0M | 49 |
| Coqui | Voice AI | Open source · Self-hostable | Berlin, Germany | $2.0M | 48 |
| BLBlip | Voice AI | Open source | São Paulo, Brazil | $10.0M | 41 |
| Tryagentically | Agentic AI | Open source | San Francisco, United States | — | 40 |
| Symbl.ai | Voice AI | Open source | San Francisco, United States | $6.4M | 36 |
| Jako.ai | Enterprise | Open source | Tel Aviv, Israel | — | 20 |
| Zenthic | Conversational AI | Open source | San Francisco, United States | — | 15 |
| Google Cloud Text-to-Speech | Voice AI | Open source | Mountain View, United States | — | — |
| Synchuman | Voice AI | Open source | Tel Aviv, Israel | — | — |
| Genesys Cloud CX | Contact Center AI | Open source | Daly City, United States | $3.9B | 64 |
| Meaning | Artificial Intelligence | Open source | Tel Aviv, Israel | — | 55 |
| OBoBot.ai | Conversational AI | Open source | Tel Aviv, Israel | $3.5M | 45 |
| Hyper | Conversational AI | Open source | San Francisco, United States | $12.3M | 44 |
| Bluebutler | Customer Service Automation | Open source | Tel Aviv, Israel | $12.0M | 42 |
| Clara Ai | Conversational 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 |
| Raincheck AI | Agentic AI | Open source | San Francisco, United States | — | 28 |
| Corereflex | Customer Service Automation | Open source | Tel Aviv, Israel | — | 22 |
| Darim | Conversational AI | Open source | — | — | 14 |
| Convo | Voice AI | Open source | San Francisco, United States | — | 10 |
| Appquest | Conversational AI | Open source | Tel Aviv, Israel | — | 2 |
| Zentok | Conversational AI | Open source | Tel Aviv, Israel | — | — |
| Conveyai | Conversational AI | Open source | Tel Aviv, Israel | — | — |
| Domulis | Conversational AI | Open source | London, United Kingdom | — | — |
| Moriwa | Conversational AI | Open source | — | — | — |
| Flintgpt | Conversational AI | Open source | — | — | — |
| Piace | Agentic AI | Open source | Tel Aviv, Israel | — | — |
| Scalina | Conversational AI | Open source | — | — | — |
| Maiqa | Conversational AI | Open source | — | — | — |
| Kotoku | Conversational AI | Open source | Tel Aviv, Israel | — | — |
| Agentic AI | Open source | San Francisco, United States | — | — | |
| Xallarap | Conversational AI | Open source | — | — | — |
| Asqs | Conversational AI | Open source | Tel Aviv, Israel | — | — |