Open source focus
Open Source Alternatives to Astrobrowse
60 open source AI Search Engine options similar to Astrobrowse, 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.
Langchain-Chatchat11Open SourceOpen source · Self-hostable
DataforeveryoneAI Search EngineSan Francisco, United StatesOpen source
Perplexity AI71Search EngineSan Francisco, United States$591.4MOpen source
Elicit62Artificial IntelligenceOakland, United States$31.0MOpen source
Vectara60Agentic AIPalo Alto, United States$40.0MOpen source
Composio59Agentic AISan Francisco, United States$50.0MOpen source
Langfuse GmbH58MLOpsBerlin, Germany$2.5MOpen source
Deepjudge Ai54LegalTechTel Aviv, Israel$53.4MOpen source
Chalk.ai48LegalTechSan Francisco, United StatesOpen source
Isacus46LegalTechTel Aviv, Israel$700KOpen source
Andraste32Agentic AISan Francisco, United StatesOpen source
MemGPT28Foundation ModelOpen source
Briefbridge23AI Search EngineTel Aviv, Israel$1.5MOpen source
GPT Researcher13Agentic AIOpen source
LlamaAi (DefiLlama)10FintechOpen source
TinyFish3Artificial IntelligenceSan Francisco, United StatesOpen source
PostintelligencecontractsLegalTechOpen source
VektorsearchpartnersAI Search EngineTel Aviv, IsraelOpen source
- ThebabrainAI Search Engine
Open source
FastclaudeAI Search EngineOpen source
KaliaiFoundation ModelSan Francisco, United StatesOpen source
KnowqlAI Search EngineOpen 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
Tavily57Generative AITel Aviv, Israel$5.0MOpen source
CHAI: AI Platform56AI InfrastructurePalo Alto, United States$3.7MOpen source
Arcten55Agentic AISan Francisco, United StatesOpen source
Bito54AI Coding AssistantSan Francisco, United States$5.7MOpen source
Neuronics54AI Drug DiscoverySan Francisco, United StatesOpen source
Langfuse54MLOpsBerlin, Germany$2.5MOpen source
Feast AI54MLOpsSan Francisco, United StatesOpen source · Self-hostable
GitHits44Developer ToolsHelsinki, Finland$1.5MOpen source · Self-hostable
ScaleKit42MLOpsSan Francisco, United States$5.5MOpen source
Haystack42AI Search EngineSan Francisco, United States$10.0MOpen source
- MIMind Lab41Artificial IntelligenceSan Francisco, United States
Open source
Noumena AI40Agentic AIתל אביב - יפו, IsraelOpen source
Answers36AI Search EngineSan Francisco, United States$1.5BOpen source
Qualifire32Generative AIOpen source
AIMLAPI30Machine LearningOpen source
Vibranium Dome23AI AgentsOpen source · Self-hostable
Fundamental Research Labs22Frontier AI LabSan Francisco, United States$10.0MOpen source
Langbase20Agentic AISan Francisco, United StatesOpen source
Atomic Chat19On-Device AIOpen source
Quantty15Foundation ModelOpen source
WebWright11API PlatformOpen source
Helixaai8Foundation ModelOpen source
- PRPrivateGPT5AI Search Engine
Open source · Self-hostable
42research4AI Search EngineTel Aviv, IsraelOpen source
Global ExamsEdTechOpen source
SecondarybrainAI Search EngineSan Francisco, United StatesOpen source
ClauderizerAI Coding AssistantOpen source
- ExploitcheckCybersecurity
Open source
Consensus360AI Search EngineOpen source
ZenlawyerLegalTechTel Aviv, IsraelOpen source
- EvolvinglabAgentic AI
Open source
- LoireLegalTechSan Francisco, United States
Open source
AskjoynaAgentic AISan Francisco, United StatesOpen source
Open and AsyncAgentic AISan Francisco, United StatesOpen source
| Company | Sector | License | HQ | Funding | Score |
|---|---|---|---|---|---|
| Langchain-Chatchat | Open Source | Open source · Self-hostable | — | — | 11 |
| Dataforeveryone | AI Search Engine | Open source | San Francisco, United States | — | — |
| Perplexity AI | Search Engine | Open source | San Francisco, United States | $591.4M | 71 |
| Elicit | Artificial Intelligence | Open source | Oakland, United States | $31.0M | 62 |
| Vectara | Agentic AI | Open source | Palo Alto, United States | $40.0M | 60 |
| Composio | Agentic AI | Open source | San Francisco, United States | $50.0M | 59 |
| Langfuse GmbH | MLOps | Open source | Berlin, Germany | $2.5M | 58 |
| Deepjudge Ai | LegalTech | Open source | Tel Aviv, Israel | $53.4M | 54 |
| Chalk.ai | LegalTech | Open source | San Francisco, United States | — | 48 |
| Isacus | LegalTech | Open source | Tel Aviv, Israel | $700K | 46 |
| Andraste | Agentic AI | Open source | San Francisco, United States | — | 32 |
| MemGPT | Foundation Model | Open source | — | — | 28 |
| Briefbridge | AI Search Engine | Open source | Tel Aviv, Israel | $1.5M | 23 |
| GPT Researcher | Agentic AI | Open source | — | — | 13 |
| LlamaAi (DefiLlama) | Fintech | Open source | — | — | 10 |
| TinyFish | Artificial Intelligence | Open source | San Francisco, United States | — | 3 |
| Postintelligencecontracts | LegalTech | Open source | — | — | — |
| Vektorsearchpartners | AI Search Engine | Open source | Tel Aviv, Israel | — | — |
| AI Search Engine | Open source | — | — | — | |
| Fastclaude | AI Search Engine | Open source | — | — | — |
| Kaliai | Foundation Model | Open source | San Francisco, United States | — | — |
| Knowql | AI Search Engine | Open source | — | — | — |
| 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 |
| Tavily | Generative AI | Open source | Tel Aviv, Israel | $5.0M | 57 |
| CHAI: AI Platform | AI Infrastructure | Open source | Palo Alto, United States | $3.7M | 56 |
| Arcten | Agentic AI | Open source | San Francisco, United States | — | 55 |
| Bito | AI Coding Assistant | Open source | San Francisco, United States | $5.7M | 54 |
| Neuronics | AI Drug Discovery | Open source | San Francisco, United States | — | 54 |
| Langfuse | MLOps | Open source | Berlin, Germany | $2.5M | 54 |
| Feast AI | MLOps | Open source · Self-hostable | San Francisco, United States | — | 54 |
| GitHits | Developer Tools | Open source · Self-hostable | Helsinki, Finland | $1.5M | 44 |
| ScaleKit | MLOps | Open source | San Francisco, United States | $5.5M | 42 |
| Haystack | AI Search Engine | Open source | San Francisco, United States | $10.0M | 42 |
| MIMind Lab | Artificial Intelligence | Open source | San Francisco, United States | — | 41 |
| Noumena AI | Agentic AI | Open source | תל אביב - יפו, Israel | — | 40 |
| Answers | AI Search Engine | Open source | San Francisco, United States | $1.5B | 36 |
| Qualifire | Generative AI | Open source | — | — | 32 |
| AIMLAPI | Machine Learning | Open source | — | — | 30 |
| Vibranium Dome | AI Agents | Open source · Self-hostable | — | — | 23 |
| Fundamental Research Labs | Frontier AI Lab | Open source | San Francisco, United States | $10.0M | 22 |
| Langbase | Agentic AI | Open source | San Francisco, United States | — | 20 |
| Atomic Chat | On-Device AI | Open source | — | — | 19 |
| Quantty | Foundation Model | Open source | — | — | 15 |
| WebWright | API Platform | Open source | — | — | 11 |
| Helixaai | Foundation Model | Open source | — | — | 8 |
| PRPrivateGPT | AI Search Engine | Open source · Self-hostable | — | — | 5 |
| 42research | AI Search Engine | Open source | Tel Aviv, Israel | — | 4 |
| Global Exams | EdTech | Open source | — | — | — |
| Secondarybrain | AI Search Engine | Open source | San Francisco, United States | — | — |
| Clauderizer | AI Coding Assistant | Open source | — | — | — |
| Cybersecurity | Open source | — | — | — | |
| Consensus360 | AI Search Engine | Open source | — | — | — |
| Zenlawyer | LegalTech | Open source | Tel Aviv, Israel | — | — |
| Agentic AI | Open source | — | — | — | |
| LegalTech | Open source | San Francisco, United States | — | — | |
| Askjoyna | Agentic AI | Open source | San Francisco, United States | — | — |
| Open and Async | Agentic AI | Open source | San Francisco, United States | — | — |