Open source focus
Open Source Alternatives to Nooklet
60 open source Voice AI options similar to Nooklet, 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.
Metadialogues15Conversational AIOpen source
evo.ninja12Agentic AIOpen source
IntervyouAI AgentOpen source
OpenAI84Artificial IntelligenceSan Francisco, United States$493.9BOpen 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
Sendbird61Conversational AISan Mateo, United StatesOpen source
Vocode50Open SourceSan Francisco, United States$3.8MOpen source · Self-hostable
- COCognigy50Voice AgentDüsseldorf, Germany$156.5M
Open source
Coqui48Voice AIBerlin, Germany$2.0MOpen source · Self-hostable
Saperly43Voice AISan Francisco, United States$2.0MOpen source
Cekura40Agentic AITel Aviv, IsraelOpen source
Symbl.ai36Voice AISan Francisco, United States$6.4MOpen source
Lionwire17Voice AIOpen source
Mirrorfly11Agentic AIChennai, IndiaOpen source
Convo10Voice AISan Francisco, United StatesOpen source
IbodycamVoice AIOpen source
SynchumanVoice AITel Aviv, IsraelOpen source
CallrichVoice AIOpen source
GetpointVoice AITel Aviv, IsraelOpen source
LingseeVoice AITel Aviv, IsraelOpen source
Genesys Cloud CX64Contact Center AIDaly City, United States$3.9BOpen source
Nomi55AI CopilotSan Francisco, United States$180.0MOpen source
Resemble AI55Voice AINew York, United States$36.5MOpen source
- OBOBOt AI49Conversational AITel Aviv, Israel$5.0M
Open source
- SASales Interaction Agent47Agentic AISan Francisco, United States$5.0M
Open source
Lucida AI46Artificial IntelligenceSan Francisco, United States$13.1MOpen source
Dante45Artificial Intelligence$1.5MOpen 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
Plurai34Conversational AITel Aviv, IsraelOpen source
Callbravo34Voice AITel Aviv, Israel$1.5MOpen source
Aquotiq32Conversational AILouth, United KingdomOpen source
Thenvoi AI Ltd31Conversational AILondon, United KingdomOpen source
SweetDream AI25AI GirlfriendIstanbul, TurkeyOpen source
IAGO22Travel$200KOpen source
Jako.ai20EnterpriseTel Aviv, IsraelOpen source
Zenthic15Conversational AISan Francisco, United StatesOpen source
Darim14Conversational AIOpen source
Etherwaves AI14Conversational AIOpen source
Fluentco9Voice AISan Francisco, United StatesOpen source
Appquest2Conversational AITel Aviv, IsraelOpen source
TelenowVoice AISan Francisco, United StatesOpen source
RevochatConversational AIOpen source
ScalinaConversational AIOpen source
MoriwaConversational AIOpen source
Google Cloud Text-to-SpeechVoice AIMountain View, United StatesOpen source
AskjoynaAgentic AISan Francisco, United StatesOpen source
Thiomi LughaEdTechOpen source
PipclawAI AgentOpen source
- FunbuttonVoice AI
Open source
RevanipulseAgentic AIOpen source
LetustalkVoice AIOpen source
KaaiaConversational AITel Aviv, IsraelOpen source
GoumiFoundation ModelBeaverton, United StatesOpen source
Mister WolfAgentic AITel Aviv, IsraelOpen source
| Company | Sector | License | HQ | Funding | Score | Website |
|---|---|---|---|---|---|---|
| Metadialogues | Conversational AI | Open source | — | — | 15 | |
| evo.ninja | Agentic AI | Open source | — | — | 12 | |
| Intervyou | AI Agent | Open source | — | — | — | |
| OpenAI | Artificial Intelligence | Open source | San Francisco, United States | $493.9B | 84 | |
| 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 | |
| Sendbird | Conversational AI | Open source | San Mateo, United States | — | 61 | |
| Vocode | Open Source | Open source · Self-hostable | San Francisco, United States | $3.8M | 50 | |
| COCognigy | Voice Agent | Open source | Düsseldorf, Germany | $156.5M | 50 | |
| Coqui | Voice AI | Open source · Self-hostable | Berlin, Germany | $2.0M | 48 | |
| Saperly | Voice AI | Open source | San Francisco, United States | $2.0M | 43 | |
| Cekura | Agentic AI | Open source | Tel Aviv, Israel | — | 40 | |
| Symbl.ai | Voice AI | Open source | San Francisco, United States | $6.4M | 36 | |
| Lionwire | Voice AI | Open source | — | — | 17 | |
| Mirrorfly | Agentic AI | Open source | Chennai, India | — | 11 | |
| Convo | Voice AI | Open source | San Francisco, United States | — | 10 | |
| Ibodycam | Voice AI | Open source | — | — | — | |
| Synchuman | Voice AI | Open source | Tel Aviv, Israel | — | — | |
| Callrich | Voice AI | Open source | — | — | — | |
| Getpoint | Voice AI | Open source | Tel Aviv, Israel | — | — | |
| Lingsee | Voice AI | Open source | Tel Aviv, Israel | — | — | |
| 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 | 55 | |
| Resemble AI | Voice AI | Open source | New York, United States | $36.5M | 55 | |
| 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 | |
| Lucida AI | Artificial Intelligence | Open source | San Francisco, United States | $13.1M | 46 | |
| Dante | Artificial Intelligence | Open source | — | $1.5M | 45 | |
| 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 | |
| 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 | |
| Thenvoi AI Ltd | Conversational AI | Open source | London, United Kingdom | — | 31 | |
| SweetDream AI | AI Girlfriend | Open source | Istanbul, Turkey | — | 25 | |
| IAGO | Travel | Open source | — | $200K | 22 | |
| Jako.ai | Enterprise | Open source | Tel Aviv, Israel | — | 20 | |
| Zenthic | Conversational AI | Open source | San Francisco, United States | — | 15 | |
| Darim | Conversational AI | Open source | — | — | 14 | |
| Etherwaves AI | Conversational AI | Open source | — | — | 14 | |
| Fluentco | Voice AI | Open source | San Francisco, United States | — | 9 | |
| Appquest | Conversational AI | Open source | Tel Aviv, Israel | — | 2 | |
| Telenow | Voice AI | Open source | San Francisco, United States | — | — | |
| Revochat | Conversational AI | Open source | — | — | — | |
| Scalina | Conversational AI | Open source | — | — | — | |
| Moriwa | Conversational AI | Open source | — | — | — | |
| Google Cloud Text-to-Speech | Voice AI | Open source | Mountain View, United States | — | — | |
| Askjoyna | Agentic AI | Open source | San Francisco, United States | — | — | |
| Thiomi Lugha | EdTech | Open source | — | — | — | |
| Pipclaw | AI Agent | Open source | — | — | — | |
| Voice AI | Open source | — | — | — | ||
| Revanipulse | Agentic AI | Open source | — | — | — | |
| Letustalk | Voice AI | Open source | — | — | — | |
| Kaaia | Conversational AI | Open source | Tel Aviv, Israel | — | — | |
| Goumi | Foundation Model | Open source | Beaverton, United States | — | — | |
| Mister Wolf | Agentic AI | Open source | Tel Aviv, Israel | — | — |