Open source focus
Open Source Alternatives to Writhub
60 open source AI Search Engine options similar to Writhub, 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.
Open and AsyncAgentic AISan Francisco, United StatesOpen source
Bito54AI Coding AssistantSan Francisco, United States$5.7MOpen source
GPT Researcher13Agentic AIOpen source
kuafuai8Agentic AIBeijing, ChinaOpen source
42research4AI Search EngineTel Aviv, IsraelOpen source
VektorsearchpartnersAI Search EngineTel Aviv, IsraelOpen source
AskjoynaAgentic AISan Francisco, United StatesOpen source
- ThebabrainAI Search Engine
Open source
MotorwerkGenerative AITel Aviv, IsraelOpen source
Coworker.aiHR TechOpen source
SecondarybrainAI Search EngineSan Francisco, United StatesOpen source
Perplexity AI71Search EngineSan Francisco, United States$591.4MOpen source
Dust65Agentic AIParis, France$15.0MOpen source
Vectara60Agentic AIPalo Alto, United States$40.0MOpen source
Composio59Agentic AISan Francisco, United States$50.0MOpen source
Graphite55AI Coding AssistantSan Francisco, United StatesOpen source
Taskade49SpaceTechNew York, United States$1.0MOpen source
Chalk.ai48LegalTechSan Francisco, United StatesOpen source
Apideck46API PlatformUnknown, UnknownOpen source
Isacus46LegalTechTel Aviv, Israel$700KOpen source
Seek AI46AI Coding AssistantTel Aviv, IsraelOpen 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
Briefbridge36AI Search EngineTel Aviv, Israel$1.5MOpen source
CustomGPT35AI ChatbotTel Aviv, Israel$1.0MOpen source
Andraste32Agentic AISan Francisco, United StatesOpen source
All-Hands AI25Agentic AIOpen source · Self-hostable
Recallguru21AI Search EngineOpen source
Langchain-Chatchat11Open SourceOpen source · Self-hostable
LlamaAi (DefiLlama)10FintechOpen source
TinyFish3Artificial IntelligenceSan Francisco, United StatesOpen source
GitHub Copilot Agent Mode0AI Coding AssistantSan Francisco, United StatesOpen source
GoumiFoundation ModelBeaverton, United StatesOpen source
ZenlawyerLegalTechTel Aviv, IsraelOpen source
KaliaiFoundation ModelSan Francisco, United StatesOpen source
ClauderizerAI Coding AssistantOpen source
DataforeveryoneAI Search EngineSan Francisco, United StatesOpen source
FastclaudeAI Search EngineOpen source
StudyboltEdTechTel Aviv, IsraelOpen source
RawqConversational AITel Aviv, IsraelOpen source
JustemailAI Search EngineTel Aviv, IsraelOpen source
PostintelligencecontractsLegalTechOpen source
PaperswanAI Search EngineSan Francisco, United StatesOpen source
Denser AIAI ChatbotTel Aviv, IsraelOpen source
OpenAI84Artificial IntelligenceSan Francisco, United States$493.9BOpen source
Cursor80Artificial IntelligenceSan Francisco, United States$2.9BOpen source
Arena71Artificial IntelligenceBerkeley, USA$250.0MOpen source
Codeium71Artificial IntelligenceMountain View, United States$396.7MOpen source
Pinecone69AI InfrastructureSan Francisco, United States$138.0MOpen source
Lacentral68Frontier AI LabSan Francisco, United States$11.3BOpen source
- MOMoonshot AI66Frontier AI LabBeijing, China$250.0M
Open source
Sourcegraph (Cody)66AI Coding AssistantSan Francisco, United States$301.0MOpen source
z.ai65Foundation ModelSan Francisco, USA$1.3BOpen source
Viktor62Artificial IntelligenceWarsaw, Poland$64.7MOpen source
LiteLLM62Foundation ModelSan Francisco, United StatesOpen source · Self-hostable
LangChain61Agentic AISan Francisco, United States$260.0MOpen source
Tavily57Generative AITel Aviv, Israel$5.0MOpen source
- MIMintlify / mcpt57Developer ToolsSan Francisco, United States
Open source
Auto-GPT56Agentic AI$12.0MOpen source · Self-hostable
| Company | Sector | License | HQ | Funding | Score |
|---|---|---|---|---|---|
| Open and Async | Agentic AI | Open source | San Francisco, United States | — | — |
| Bito | AI Coding Assistant | Open source | San Francisco, United States | $5.7M | 54 |
| GPT Researcher | Agentic AI | Open source | — | — | 13 |
| kuafuai | Agentic AI | Open source | Beijing, China | — | 8 |
| 42research | AI Search Engine | Open source | Tel Aviv, Israel | — | 4 |
| Vektorsearchpartners | AI Search Engine | Open source | Tel Aviv, Israel | — | — |
| Askjoyna | Agentic AI | Open source | San Francisco, United States | — | — |
| AI Search Engine | Open source | — | — | — | |
| Motorwerk | Generative AI | Open source | Tel Aviv, Israel | — | — |
| Coworker.ai | HR Tech | Open source | — | — | — |
| Secondarybrain | AI Search Engine | Open source | San Francisco, United States | — | — |
| Perplexity AI | Search Engine | Open source | San Francisco, United States | $591.4M | 71 |
| Dust | Agentic AI | Open source | Paris, France | $15.0M | 65 |
| Vectara | Agentic AI | Open source | Palo Alto, United States | $40.0M | 60 |
| Composio | Agentic AI | Open source | San Francisco, United States | $50.0M | 59 |
| Graphite | AI Coding Assistant | Open source | San Francisco, United States | — | 55 |
| Taskade | SpaceTech | Open source | New York, United States | $1.0M | 49 |
| Chalk.ai | LegalTech | Open source | San Francisco, United States | — | 48 |
| Apideck | API Platform | Open source | Unknown, Unknown | — | 46 |
| Isacus | LegalTech | Open source | Tel Aviv, Israel | $700K | 46 |
| Seek AI | AI Coding Assistant | Open source | Tel Aviv, Israel | — | 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 |
| Briefbridge | AI Search Engine | Open source | Tel Aviv, Israel | $1.5M | 36 |
| CustomGPT | AI Chatbot | Open source | Tel Aviv, Israel | $1.0M | 35 |
| Andraste | Agentic AI | Open source | San Francisco, United States | — | 32 |
| All-Hands AI | Agentic AI | Open source · Self-hostable | — | — | 25 |
| Recallguru | AI Search Engine | Open source | — | — | 21 |
| Langchain-Chatchat | Open Source | Open source · Self-hostable | — | — | 11 |
| LlamaAi (DefiLlama) | Fintech | Open source | — | — | 10 |
| TinyFish | Artificial Intelligence | Open source | San Francisco, United States | — | 3 |
| GitHub Copilot Agent Mode | AI Coding Assistant | Open source | San Francisco, United States | — | 0 |
| Goumi | Foundation Model | Open source | Beaverton, United States | — | — |
| Zenlawyer | LegalTech | Open source | Tel Aviv, Israel | — | — |
| Kaliai | Foundation Model | Open source | San Francisco, United States | — | — |
| Clauderizer | AI Coding Assistant | Open source | — | — | — |
| Dataforeveryone | AI Search Engine | Open source | San Francisco, United States | — | — |
| Fastclaude | AI Search Engine | Open source | — | — | — |
| Studybolt | EdTech | Open source | Tel Aviv, Israel | — | — |
| Rawq | Conversational AI | Open source | Tel Aviv, Israel | — | — |
| Justemail | AI Search Engine | Open source | Tel Aviv, Israel | — | — |
| Postintelligencecontracts | LegalTech | Open source | — | — | — |
| Paperswan | AI Search Engine | Open source | San Francisco, United States | — | — |
| Denser AI | AI Chatbot | Open source | Tel Aviv, Israel | — | — |
| OpenAI | Artificial Intelligence | Open source | San Francisco, United States | $493.9B | 84 |
| Cursor | Artificial Intelligence | Open source | San Francisco, United States | $2.9B | 80 |
| Arena | Artificial Intelligence | Open source | Berkeley, USA | $250.0M | 71 |
| Codeium | Artificial Intelligence | Open source | Mountain View, United States | $396.7M | 71 |
| Pinecone | AI Infrastructure | Open source | San Francisco, United States | $138.0M | 69 |
| Lacentral | Frontier AI Lab | Open source | San Francisco, United States | $11.3B | 68 |
| MOMoonshot AI | Frontier AI Lab | Open source | Beijing, China | $250.0M | 66 |
| Sourcegraph (Cody) | AI Coding Assistant | Open source | San Francisco, United States | $301.0M | 66 |
| z.ai | Foundation Model | Open source | San Francisco, USA | $1.3B | 65 |
| Viktor | Artificial Intelligence | Open source | Warsaw, Poland | $64.7M | 62 |
| LiteLLM | Foundation Model | Open source · Self-hostable | San Francisco, United States | — | 62 |
| LangChain | Agentic AI | Open source | San Francisco, United States | $260.0M | 61 |
| Tavily | Generative AI | Open source | Tel Aviv, Israel | $5.0M | 57 |
| MIMintlify / mcpt | Developer Tools | Open source | San Francisco, United States | — | 57 |
| Auto-GPT | Agentic AI | Open source · Self-hostable | — | $12.0M | 56 |