Open source focus
Open Source Alternatives to Knowforge
60 open source AI Search Engine options similar to Knowforge, 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.
VektorsearchpartnersAI Search EngineTel Aviv, IsraelOpen source
Vectara60Agentic AIPalo Alto, United States$40.0MOpen source
CustomGPT46AI ChatbotTel Aviv, Israel$1.0MOpen source
Haystack42AI Search EngineSan Francisco, United States$10.0MOpen source
Supernova37Developer ToolsSan Francisco, United States$129.2MOpen source
Answers36AI Search EngineSan Francisco, United States$1.5BOpen source
PrivateGPT5AI Search EngineToronto, CanadaOpen source · Self-hostable
42research4AI Search EngineTel Aviv, IsraelOpen source
PostintelligencecontractsLegalTechOpen source
Open and AsyncAgentic AISan Francisco, United StatesOpen source
SecondarybrainAI Search EngineSan Francisco, United StatesOpen source
OpenAI84Artificial IntelligenceSan Francisco, United States$493.9BOpen source
DeepL82Artificial IntelligenceCologne, Germany$300.0MOpen source
Bloomberg L.P.82FintechNew York, United States$60.1BOpen source
Perplexity AI71Search EngineSan Francisco, United States$591.4MOpen source
Arena71Artificial IntelligenceBerkeley, USA$250.0MOpen 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
Sarvam AI63Agentic AIBengaluru, India$234.0MOpen source
Cognigy (NICE)63Voice AgentDüsseldorf, GermanyOpen source
Lakera AI AG63AI SecurityBerlin, Germany$12.0MOpen source
Viktor62Artificial IntelligenceWarsaw, Poland$64.7MOpen source
Sendbird61Conversational AISan Mateo, United StatesOpen source
- BRBria56Generative AITel Aviv, Israel$130.5M
Open source
pleias55AI InfrastructureParis, FranceOpen source
Graphite55AI Coding AssistantSan Francisco, United StatesOpen source
Deepjudge Ai54LegalTechTel Aviv, Israel$53.4MOpen source
Knostic54Cybersecurity$14.3MOpen source
giniX54Generative AITel Aviv, IsraelOpen source
Taskade49SpaceTechNew York, United States$1.0MOpen source
Chalk.ai48LegalTechSan Francisco, United StatesOpen source
Prem47Artificial IntelligenceZurich, Switzerland$100.0MOpen source
Isacus46LegalTechTel Aviv, Israel$700KOpen source
Outlit45Agentic AI$500KOpen source
Kiro IDE44Artificial IntelligenceSan Francisco, United StatesOpen source
Adot43E-commerceSan Francisco, United StatesOpen source
Orq.ai41Agentic AIAmsterdam, Netherlands$8.9MOpen source
Briefbridge36AI Search EngineTel Aviv, Israel$1.5MOpen source
TandemTrace35Agentic AIOpen source
GrackerAI33Agentic SEOTel Aviv, IsraelOpen source
Andraste32Agentic AISan Francisco, United StatesOpen source
Qualifire32Generative AIOpen source
QUBRID30Cloud InfrastructureOpen source
Gizzmo27MediaOpen source
Gemini CLI27AI Tools & AppsOpen source · Self-hostable
Vibranium Dome23AI AgentsOpen source · Self-hostable
Recallguru21AI Search EngineOpen source
- COCometAPI15API PlatformSha Tin, China
Open source
Quantty15Foundation ModelOpen source
GPT Researcher13Agentic AIOpen source
Langchain-Chatchat11Open SourceOpen source · Self-hostable
LlamaAi (DefiLlama)10FintechOpen source
- POPostgres MCP10DatabaseSan Francisco, United States
Open source
Aegisecosystem4Data CollaborationTel Aviv, IsraelOpen source
TinyFish3Artificial IntelligenceSan Francisco, United StatesOpen source
PaperswanAI Search EngineSan Francisco, United StatesOpen source
Denser AIAI ChatbotTel Aviv, IsraelOpen source
AntropusAgentic SEOMadrid, SpainOpen source
MoriwaConversational AIOpen source
| Company | Sector | License | HQ | Funding | Score | Website |
|---|---|---|---|---|---|---|
| Vektorsearchpartners | AI Search Engine | Open source | Tel Aviv, Israel | — | — | |
| Vectara | Agentic AI | Open source | Palo Alto, United States | $40.0M | 60 | |
| CustomGPT | AI Chatbot | Open source | Tel Aviv, Israel | $1.0M | 46 | |
| 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 | |
| Answers | AI Search Engine | Open source | San Francisco, United States | $1.5B | 36 | |
| PrivateGPT | AI Search Engine | Open source · Self-hostable | Toronto, Canada | — | 5 | |
| 42research | AI Search Engine | Open source | Tel Aviv, Israel | — | 4 | |
| Postintelligencecontracts | LegalTech | Open source | — | — | — | |
| Open and Async | Agentic AI | Open source | San Francisco, United States | — | — | |
| Secondarybrain | AI Search Engine | Open source | San Francisco, United States | — | — | |
| OpenAI | Artificial Intelligence | Open source | San Francisco, United States | $493.9B | 84 | |
| DeepL | Artificial Intelligence | Open source | Cologne, Germany | $300.0M | 82 | |
| Bloomberg L.P. | Fintech | Open source | New York, United States | $60.1B | 82 | |
| Perplexity AI | Search Engine | Open source | San Francisco, United States | $591.4M | 71 | |
| Arena | Artificial Intelligence | Open source | Berkeley, USA | $250.0M | 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 | |
| Sarvam AI | Agentic AI | Open source | Bengaluru, India | $234.0M | 63 | |
| Cognigy (NICE) | Voice Agent | Open source | Düsseldorf, Germany | — | 63 | |
| Lakera AI AG | AI Security | Open source | Berlin, Germany | $12.0M | 63 | |
| Viktor | Artificial Intelligence | Open source | Warsaw, Poland | $64.7M | 62 | |
| Sendbird | Conversational AI | Open source | San Mateo, United States | — | 61 | |
| BRBria | Generative AI | Open source | Tel Aviv, Israel | $130.5M | 56 | |
| pleias | AI Infrastructure | Open source | Paris, France | — | 55 | |
| Graphite | AI Coding Assistant | Open source | San Francisco, United States | — | 55 | |
| Deepjudge Ai | LegalTech | Open source | Tel Aviv, Israel | $53.4M | 54 | |
| Knostic | Cybersecurity | Open source | — | $14.3M | 54 | |
| giniX | Generative AI | Open source | Tel Aviv, Israel | — | 54 | |
| Taskade | SpaceTech | Open source | New York, United States | $1.0M | 49 | |
| Chalk.ai | LegalTech | Open source | San Francisco, United States | — | 48 | |
| Prem | Artificial Intelligence | Open source | Zurich, Switzerland | $100.0M | 47 | |
| Isacus | LegalTech | Open source | Tel Aviv, Israel | $700K | 46 | |
| Outlit | Agentic AI | Open source | — | $500K | 45 | |
| Kiro IDE | Artificial Intelligence | Open source | San Francisco, United States | — | 44 | |
| Adot | E-commerce | Open source | San Francisco, United States | — | 43 | |
| Orq.ai | Agentic AI | Open source | Amsterdam, Netherlands | $8.9M | 41 | |
| Briefbridge | AI Search Engine | Open source | Tel Aviv, Israel | $1.5M | 36 | |
| TandemTrace | Agentic AI | Open source | — | — | 35 | |
| GrackerAI | Agentic SEO | Open source | Tel Aviv, Israel | — | 33 | |
| Andraste | Agentic AI | Open source | San Francisco, United States | — | 32 | |
| Qualifire | Generative AI | Open source | — | — | 32 | |
| QUBRID | Cloud Infrastructure | Open source | — | — | 30 | |
| Gizzmo | Media | Open source | — | — | 27 | |
| Gemini CLI | AI Tools & Apps | Open source · Self-hostable | — | — | 27 | |
| Vibranium Dome | AI Agents | Open source · Self-hostable | — | — | 23 | |
| Recallguru | AI Search Engine | Open source | — | — | 21 | |
| COCometAPI | API Platform | Open source | Sha Tin, China | — | 15 | |
| Quantty | Foundation Model | Open source | — | — | 15 | |
| GPT Researcher | Agentic AI | Open source | — | — | 13 | |
| Langchain-Chatchat | Open Source | Open source · Self-hostable | — | — | 11 | |
| LlamaAi (DefiLlama) | Fintech | Open source | — | — | 10 | |
| POPostgres MCP | Database | Open source | San Francisco, United States | — | 10 | |
| Aegisecosystem | Data Collaboration | Open source | Tel Aviv, Israel | — | 4 | |
| TinyFish | Artificial Intelligence | Open source | San Francisco, United States | — | 3 | |
| Paperswan | AI Search Engine | Open source | San Francisco, United States | — | — | |
| Denser AI | AI Chatbot | Open source | Tel Aviv, Israel | — | — | |
| Antropus | Agentic SEO | Open source | Madrid, Spain | — | — | |
| Moriwa | Conversational AI | Open source | — | — | — |