Open source focus
Open Source Alternatives to Rabai
60 open source AI Search Engine options similar to Rabai, 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.
SecondarybrainAI Search EngineSan Francisco, United StatesOpen source
Perplexity AI71Search EngineSan Francisco, United States$591.4MOpen source
Raindrop40AI Search EngineMoscow, Russia$32.8MOpen source
Answers36AI Search EngineSan Francisco, United States$1.5BOpen source
Andraste32Agentic AISan Francisco, United StatesOpen source
- PRPrivateGPT5AI Search Engine
Open source · Self-hostable
42research4AI Search EngineTel Aviv, IsraelOpen source
TinyFish3Artificial IntelligenceSan Francisco, United StatesOpen source
Open and AsyncAgentic AISan Francisco, United StatesOpen source
BiblelensAI Search EngineOpen source
KaliaiFoundation ModelSan Francisco, United StatesOpen source
StudyboltEdTechTel Aviv, IsraelOpen source
AskjoynaAgentic AISan Francisco, United StatesOpen source
VektorsearchpartnersAI Search EngineTel Aviv, IsraelOpen source
TripvaletTravel TechTel Aviv, IsraelOpen source
Arena71Artificial IntelligenceBerkeley, USA$250.0MOpen source
Vectara60Agentic AIPalo Alto, United States$40.0MOpen source
Isacus46LegalTechTel Aviv, Israel$700KOpen source
- Why-Health42Productivity
Open source
Haystack42AI Search EngineSan Francisco, United States$10.0MOpen source
Supernova37Developer ToolsSan Francisco, United States$129.2MOpen source
CustomGPT35AI ChatbotTel Aviv, Israel$1.0MOpen source
Briefbridge23AI Search EngineTel Aviv, Israel$1.5MOpen source
Recallguru21AI Search EngineOpen source
GPT Researcher13Agentic AIOpen source
Langchain-Chatchat11Open SourceOpen source · Self-hostable
LlamaAi (DefiLlama)10FintechOpen source
Cami AppEdTechTel Aviv, IsraelOpen source
PaperswanAI Search EngineSan Francisco, United StatesOpen source
Tosly.onlineAgentic AIOpen source
- ThebabrainAI Search Engine
Open source
Denser AIAI ChatbotTel Aviv, IsraelOpen source
DataforeveryoneAI Search EngineSan Francisco, United StatesOpen source
DailycastAI Search EngineTel Aviv, IsraelOpen source
ZenlawyerLegalTechTel Aviv, IsraelOpen source
LwaiGenerative AIOpen source
PostintelligencecontractsLegalTechOpen source
RawqConversational AITel Aviv, IsraelOpen source
OpenAI84Artificial IntelligenceSan Francisco, United States$493.9BOpen source
- XAxAI78Frontier AI LabPalo Alto, United States$90.0B
Open source
Lovable75No-Code/Low-CodeStockholm, Sweden$880.2MOpen source
Pinecone69AI InfrastructureSan Francisco, United States$138.0MOpen source
z.ai65Foundation ModelSan Francisco, USA$1.3BOpen source
Dust65Agentic AIParis, France$15.0MOpen source
LiteLLM62Foundation ModelSan Francisco, United StatesOpen source · Self-hostable
Elicit62Artificial IntelligenceOakland, United States$31.0MOpen source
Composio59Agentic AISan Francisco, United States$50.0MOpen source
- MIMintlify / mcpt57Developer ToolsSan Francisco, United States
Open source
Tavily57Generative AITel Aviv, Israel$5.0MOpen source
Market Beyond57RetailTechNew York, United States$4.0MOpen source
CHAI: AI Platform56AI InfrastructurePalo Alto, United States$3.7MOpen source
Chai56AI ChatbotSan Francisco, United States$62.0MOpen source
Julius AI55Analytics PlatformSan Francisco, United States$20.5MOpen source
Deepjudge Ai54LegalTechTel Aviv, Israel$53.4MOpen source
Feast AI54MLOpsSan Francisco, United StatesOpen source · Self-hostable
Bito54AI Coding AssistantSan Francisco, United States$5.7MOpen source
Plane53Project ManagementSan Francisco, United States$4.0MOpen source
Anon53Agentic AI$6.5MOpen source
Chalk.ai48LegalTechSan Francisco, United StatesOpen source
MuchBetterAI47FintechLondon, United Kingdom$4.4MOpen source
| Company | Sector | License | HQ | Funding | Score |
|---|---|---|---|---|---|
| Secondarybrain | AI Search Engine | Open source | San Francisco, United States | — | — |
| Perplexity AI | Search Engine | Open source | San Francisco, United States | $591.4M | 71 |
| Raindrop | AI Search Engine | Open source | Moscow, Russia | $32.8M | 40 |
| Answers | AI Search Engine | Open source | San Francisco, United States | $1.5B | 36 |
| Andraste | Agentic AI | Open source | San Francisco, United States | — | 32 |
| PRPrivateGPT | AI Search Engine | Open source · Self-hostable | — | — | 5 |
| 42research | AI Search Engine | Open source | Tel Aviv, Israel | — | 4 |
| TinyFish | Artificial Intelligence | Open source | San Francisco, United States | — | 3 |
| Open and Async | Agentic AI | Open source | San Francisco, United States | — | — |
| Biblelens | AI Search Engine | Open source | — | — | — |
| Kaliai | Foundation Model | Open source | San Francisco, United States | — | — |
| Studybolt | EdTech | Open source | Tel Aviv, Israel | — | — |
| Askjoyna | Agentic AI | Open source | San Francisco, United States | — | — |
| Vektorsearchpartners | AI Search Engine | Open source | Tel Aviv, Israel | — | — |
| Tripvalet | Travel Tech | Open source | Tel Aviv, Israel | — | — |
| Arena | Artificial Intelligence | Open source | Berkeley, USA | $250.0M | 71 |
| Vectara | Agentic AI | Open source | Palo Alto, United States | $40.0M | 60 |
| Isacus | LegalTech | Open source | Tel Aviv, Israel | $700K | 46 |
| Productivity | Open source | — | — | 42 | |
| Haystack | AI Search Engine | Open source | San Francisco, United States | $10.0M | 42 |
| Supernova | Developer Tools | Open source | San Francisco, United States | $129.2M | 37 |
| CustomGPT | AI Chatbot | Open source | Tel Aviv, Israel | $1.0M | 35 |
| Briefbridge | AI Search Engine | Open source | Tel Aviv, Israel | $1.5M | 23 |
| Recallguru | AI Search Engine | Open source | — | — | 21 |
| GPT Researcher | Agentic AI | Open source | — | — | 13 |
| Langchain-Chatchat | Open Source | Open source · Self-hostable | — | — | 11 |
| LlamaAi (DefiLlama) | Fintech | Open source | — | — | 10 |
| Cami App | EdTech | Open source | Tel Aviv, Israel | — | — |
| Paperswan | AI Search Engine | Open source | San Francisco, United States | — | — |
| Tosly.online | Agentic AI | Open source | — | — | — |
| AI Search Engine | Open source | — | — | — | |
| Denser AI | AI Chatbot | Open source | Tel Aviv, Israel | — | — |
| Dataforeveryone | AI Search Engine | Open source | San Francisco, United States | — | — |
| Dailycast | AI Search Engine | Open source | Tel Aviv, Israel | — | — |
| Zenlawyer | LegalTech | Open source | Tel Aviv, Israel | — | — |
| Lwai | Generative AI | Open source | — | — | — |
| Postintelligencecontracts | LegalTech | Open source | — | — | — |
| Rawq | Conversational AI | Open source | Tel Aviv, Israel | — | — |
| OpenAI | Artificial Intelligence | Open source | San Francisco, United States | $493.9B | 84 |
| XAxAI | Frontier AI Lab | Open source | Palo Alto, United States | $90.0B | 78 |
| Lovable | No-Code/Low-Code | Open source | Stockholm, Sweden | $880.2M | 75 |
| Pinecone | AI Infrastructure | Open source | San Francisco, United States | $138.0M | 69 |
| z.ai | Foundation Model | Open source | San Francisco, USA | $1.3B | 65 |
| Dust | Agentic AI | Open source | Paris, France | $15.0M | 65 |
| LiteLLM | Foundation Model | Open source · Self-hostable | San Francisco, United States | — | 62 |
| Elicit | Artificial Intelligence | Open source | Oakland, United States | $31.0M | 62 |
| Composio | Agentic AI | Open source | San Francisco, United States | $50.0M | 59 |
| MIMintlify / mcpt | Developer Tools | Open source | San Francisco, United States | — | 57 |
| Tavily | Generative AI | Open source | Tel Aviv, Israel | $5.0M | 57 |
| Market Beyond | RetailTech | Open source | New York, United States | $4.0M | 57 |
| CHAI: AI Platform | AI Infrastructure | Open source | Palo Alto, United States | $3.7M | 56 |
| Chai | AI Chatbot | Open source | San Francisco, United States | $62.0M | 56 |
| Julius AI | Analytics Platform | Open source | San Francisco, United States | $20.5M | 55 |
| Deepjudge Ai | LegalTech | Open source | Tel Aviv, Israel | $53.4M | 54 |
| Feast AI | MLOps | Open source · Self-hostable | San Francisco, United States | — | 54 |
| Bito | AI Coding Assistant | Open source | San Francisco, United States | $5.7M | 54 |
| Plane | Project Management | Open source | San Francisco, United States | $4.0M | 53 |
| Anon | Agentic AI | Open source | — | $6.5M | 53 |
| Chalk.ai | LegalTech | Open source | San Francisco, United States | — | 48 |
| MuchBetterAI | Fintech | Open source | London, United Kingdom | $4.4M | 47 |