Open source focus
Open Source Alternatives to Open Knowledge
60 open source AI Search Engine options similar to Open Knowledge, 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.
Haystack42AI Search EngineSan Francisco, United States$10.0MOpen source
Answers36AI Search EngineSan Francisco, United States$1.5BOpen source
VektorsearchpartnersAI Search EngineOpen source
Vectara60Agentic AIPalo Alto, United States$40.0MOpen source
PrivateGPT5AI Search EngineToronto, CanadaOpen source · Self-hostable
PostintelligencecontractsLegalTechOpen source
EvolvinglabAgentic AIOpen source
Perplexity AI71Search EngineSan Francisco, United States$591.4MOpen source
Pinecone69AI InfrastructureSan Francisco, United States$138.0MOpen source
- MOMoonshot AI68Frontier AI LabBeijing, China$3.9B
Open source
TwelveLabs64Video IntelligenceSan Francisco, United States$68.0MOpen source
Tavily57Generative AITel Aviv, Israel$5.0MOpen source
Graphite55AI Coding AssistantSan Francisco, United StatesOpen source
Deepjudge Ai54LegalTechTel Aviv, Israel$53.4MOpen source
Chalk.ai48LegalTechSan Francisco, United StatesOpen source
CustomGPT46AI ChatbotTel Aviv, Israel$1.0MOpen source
Isacus46LegalTechTel Aviv, Israel$700KOpen source
GitHits45Developer ToolsHelsinki, Finland$1.5MOpen source · Self-hostable
Supernova37Developer ToolsSan Francisco, United States$129.2MOpen source
Briefbridge36AI Search Engine$1.5MOpen source
Qualifire32Generative AIOpen source
QUBRID30Cloud InfrastructureOpen source
Andraste29Agentic AIOpen source
Vibranium Dome23AI AgentsOpen source · Self-hostable
TinyFish23Artificial IntelligenceSan Francisco, United StatesOpen source
Quantty17Foundation ModelOpen source
GPT Researcher13Agentic AIOpen source
Langchain-Chatchat10Open SourceOpen source · Self-hostable
LlamaAi (DefiLlama)10FintechOpen source
42research4AI Search EngineOpen source
Open and AsyncAgentic AISan Francisco, United StatesOpen source
CasecompassLegalTechOpen source
OnelytixInnovationOpen source
Ai DnaAI InfrastructureOpen source
Consensus360AI Search EngineOpen source
Geo PlusAgentic AIOpen source
UseacreAI Search EngineOpen source
KnowqlAI Search EngineOpen source
FastclaudeAI Search EngineOpen source
BiblelensAI Search EngineOpen source
SecondarybrainAI Search EngineOpen source
StewardshipintelligenceAI Tools & AppsOpen source
KaliaiFoundation ModelOpen source
GocerebroAgentic AIOpen source
TheclearpointAgentic AIOpen source
GoumiFoundation ModelOpen source
RedbuyE-commerceOpen source
OpenAI84Artificial IntelligenceSan Francisco, United States$493.9BOpen source
Manus AI75Agentic AISingapore, Singapore$150.0MOpen source
NemoClaw75Artificial IntelligenceOpen source · Self-hostable
Dust65Agentic AIParis, France$15.0MOpen source
z.ai65Foundation ModelSan Francisco, USA$1.3BOpen source
CopilotKit64Agentic AISan Francisco, United States$42.0MOpen source
Lakera AI AG63AI SecurityBerlin, Germany$12.0MOpen source
Pola.rs63AI Search EngineTel Aviv, Israel$26.0MOpen source
Sarvam AI63Agentic AIBengaluru, India$234.0MOpen source
LiteLLM62Foundation ModelSan Francisco, United StatesOpen source · Self-hostable
Weaviate60Vector DatabaseAmsterdam, NetherlandsOpen source
Composio59Agentic AISan Francisco, United States$50.0MOpen source
Agency58Agentic AISan Francisco, United States$20.0MOpen source
| Company | Sector | License | HQ | Funding | Score | Website |
|---|---|---|---|---|---|---|
| Haystack | AI Search Engine | Open source | San Francisco, United States | $10.0M | 42 | |
| Answers | AI Search Engine | Open source | San Francisco, United States | $1.5B | 36 | |
| Vektorsearchpartners | AI Search Engine | Open source | — | — | — | |
| Vectara | Agentic AI | Open source | Palo Alto, United States | $40.0M | 60 | |
| PrivateGPT | AI Search Engine | Open source · Self-hostable | Toronto, Canada | — | 5 | |
| Postintelligencecontracts | LegalTech | Open source | — | — | — | |
| Evolvinglab | Agentic AI | Open source | — | — | — | |
| Perplexity AI | Search Engine | Open source | San Francisco, United States | $591.4M | 71 | |
| Pinecone | AI Infrastructure | Open source | San Francisco, United States | $138.0M | 69 | |
| MOMoonshot AI | Frontier AI Lab | Open source | Beijing, China | $3.9B | 68 | |
| TwelveLabs | Video Intelligence | Open source | San Francisco, United States | $68.0M | 64 | |
| Tavily | Generative AI | Open source | Tel Aviv, Israel | $5.0M | 57 | |
| Graphite | AI Coding Assistant | Open source | San Francisco, United States | — | 55 | |
| Deepjudge Ai | LegalTech | Open source | Tel Aviv, Israel | $53.4M | 54 | |
| Chalk.ai | LegalTech | Open source | San Francisco, United States | — | 48 | |
| CustomGPT | AI Chatbot | Open source | Tel Aviv, Israel | $1.0M | 46 | |
| Isacus | LegalTech | Open source | Tel Aviv, Israel | $700K | 46 | |
| GitHits | Developer Tools | Open source · Self-hostable | Helsinki, Finland | $1.5M | 45 | |
| Supernova | Developer Tools | Open source | San Francisco, United States | $129.2M | 37 | |
| Briefbridge | AI Search Engine | Open source | — | $1.5M | 36 | |
| Qualifire | Generative AI | Open source | — | — | 32 | |
| QUBRID | Cloud Infrastructure | Open source | — | — | 30 | |
| Andraste | Agentic AI | Open source | — | — | 29 | |
| Vibranium Dome | AI Agents | Open source · Self-hostable | — | — | 23 | |
| TinyFish | Artificial Intelligence | Open source | San Francisco, United States | — | 23 | |
| Quantty | Foundation Model | Open source | — | — | 17 | |
| GPT Researcher | Agentic AI | Open source | — | — | 13 | |
| Langchain-Chatchat | Open Source | Open source · Self-hostable | — | — | 10 | |
| LlamaAi (DefiLlama) | Fintech | Open source | — | — | 10 | |
| 42research | AI Search Engine | Open source | — | — | 4 | |
| Open and Async | Agentic AI | Open source | San Francisco, United States | — | — | |
| Casecompass | LegalTech | Open source | — | — | — | |
| Onelytix | Innovation | Open source | — | — | — | |
| Ai Dna | AI Infrastructure | Open source | — | — | — | |
| Consensus360 | AI Search Engine | Open source | — | — | — | |
| Geo Plus | Agentic AI | Open source | — | — | — | |
| Useacre | AI Search Engine | Open source | — | — | — | |
| Knowql | AI Search Engine | Open source | — | — | — | |
| Fastclaude | AI Search Engine | Open source | — | — | — | |
| Biblelens | AI Search Engine | Open source | — | — | — | |
| Secondarybrain | AI Search Engine | Open source | — | — | — | |
| Stewardshipintelligence | AI Tools & Apps | Open source | — | — | — | |
| Kaliai | Foundation Model | Open source | — | — | — | |
| Gocerebro | Agentic AI | Open source | — | — | — | |
| Theclearpoint | Agentic AI | Open source | — | — | — | |
| Goumi | Foundation Model | Open source | — | — | — | |
| Redbuy | E-commerce | Open source | — | — | — | |
| OpenAI | Artificial Intelligence | Open source | San Francisco, United States | $493.9B | 84 | |
| Manus AI | Agentic AI | Open source | Singapore, Singapore | $150.0M | 75 | |
| NemoClaw | Artificial Intelligence | Open source · Self-hostable | — | — | 75 | |
| Dust | Agentic AI | Open source | Paris, France | $15.0M | 65 | |
| z.ai | Foundation Model | Open source | San Francisco, USA | $1.3B | 65 | |
| CopilotKit | Agentic AI | Open source | San Francisco, United States | $42.0M | 64 | |
| Lakera AI AG | AI Security | Open source | Berlin, Germany | $12.0M | 63 | |
| Pola.rs | AI Search Engine | Open source | Tel Aviv, Israel | $26.0M | 63 | |
| Sarvam AI | Agentic AI | Open source | Bengaluru, India | $234.0M | 63 | |
| LiteLLM | Foundation Model | Open source · Self-hostable | San Francisco, United States | — | 62 | |
| Weaviate | Vector Database | Open source | Amsterdam, Netherlands | — | 60 | |
| Composio | Agentic AI | Open source | San Francisco, United States | $50.0M | 59 | |
| Agency | Agentic AI | Open source | San Francisco, United States | $20.0M | 58 |