Open source focus
42research is open source
Open Source Alternatives to 42research
60 open source AI Search Engine options similar to 42research, 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.
Elicit62Artificial IntelligenceOakland, United States$31.0MOpen source
GPT Researcher13Agentic AIOpen source
VektorsearchpartnersAI Search EngineTel Aviv, IsraelOpen source
Open and AsyncAgentic AISan Francisco, United StatesOpen source
PaperswanAI Search EngineSan Francisco, United StatesOpen source
SecondarybrainAI Search EngineSan Francisco, United StatesOpen source
Perplexity AI71Search EngineSan Francisco, United States$591.4MOpen source
Vectara60Agentic AIPalo Alto, United States$40.0MOpen source
Isacus46LegalTechTel Aviv, Israel$700KOpen 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
CustomGPT35AI ChatbotTel Aviv, Israel$1.0MOpen source
Andraste32Agentic AISan Francisco, United StatesOpen source
Briefbridge23AI Search EngineTel Aviv, Israel$1.5MOpen source
Langchain-Chatchat11Open SourceOpen source · Self-hostable
LlamaAi (DefiLlama)10FintechOpen source
TinyFish3Artificial IntelligenceSan Francisco, United StatesOpen source
Denser AIAI ChatbotTel Aviv, IsraelOpen source
- ThebabrainAI Search Engine
Open source
RawqConversational AITel Aviv, IsraelOpen source
PostintelligencecontractsLegalTechOpen source
KaliaiFoundation ModelSan Francisco, United StatesOpen source
AskjoynaAgentic AISan Francisco, United StatesOpen source
DataforeveryoneAI Search EngineSan Francisco, United StatesOpen source
Arena71Artificial IntelligenceBerkeley, USA$250.0MOpen 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
Composio59Agentic AISan Francisco, United States$50.0MOpen source
Tavily57Generative AITel Aviv, Israel$5.0MOpen source
- MIMintlify / mcpt57Developer ToolsSan Francisco, United States
Open source
Feast AI54MLOpsSan Francisco, United StatesOpen source · Self-hostable
Bito54AI Coding AssistantSan Francisco, United States$5.7MOpen source
Deepjudge Ai54LegalTechTel Aviv, Israel$53.4MOpen source
Chalk.ai48LegalTechSan Francisco, United StatesOpen source
Taskade46SpaceTechNew York, United States$1.0MOpen source
Seek AI46AI Coding AssistantTel Aviv, IsraelOpen source
Apideck46API PlatformUnknown, UnknownOpen source
Adot43E-commerceSan Francisco, United StatesOpen source
- Why-Health42Productivity
Open source
Raindrop40AI Search EngineMoscow, Russia$32.8MOpen source
GrackerAI33Agentic SEOTel Aviv, IsraelOpen source
Qualifire32Generative AIOpen source
MemGPT28Foundation ModelOpen source
Vibranium Dome23AI AgentsOpen source · Self-hostable
Recallguru21AI Search EngineOpen source
Langbase20Agentic AISan Francisco, United StatesOpen source
- Meares17Conversational AI
Open source
WebWright11API PlatformOpen source
- POPostgres MCP10DatabaseSan Francisco, United States
Open source
- PRPrivateGPT5AI Search Engine
Open source · Self-hostable
Coworker.aiHR TechOpen source
TripvaletTravel TechTel Aviv, IsraelOpen source
ZenlawyerLegalTechTel Aviv, IsraelOpen source
StudyboltEdTechTel Aviv, IsraelOpen source
BiblelensAI Search EngineOpen source
Consensus360AI Search EngineOpen source
JustemailAI Search EngineTel Aviv, IsraelOpen source
| Company | Sector | License | HQ | Funding | Score |
|---|---|---|---|---|---|
| Elicit | Artificial Intelligence | Open source | Oakland, United States | $31.0M | 62 |
| GPT Researcher | Agentic AI | Open source | — | — | 13 |
| Vektorsearchpartners | AI Search Engine | Open source | Tel Aviv, Israel | — | — |
| Open and Async | Agentic AI | Open source | San Francisco, United States | — | — |
| Paperswan | AI Search Engine | Open source | San Francisco, United States | — | — |
| Secondarybrain | AI Search Engine | Open source | San Francisco, United States | — | — |
| Perplexity AI | Search Engine | Open source | San Francisco, United States | $591.4M | 71 |
| Vectara | Agentic AI | Open source | Palo Alto, United States | $40.0M | 60 |
| Isacus | LegalTech | Open source | Tel Aviv, Israel | $700K | 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 |
| CustomGPT | AI Chatbot | Open source | Tel Aviv, Israel | $1.0M | 35 |
| Andraste | Agentic AI | Open source | San Francisco, United States | — | 32 |
| Briefbridge | AI Search Engine | Open source | Tel Aviv, Israel | $1.5M | 23 |
| 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 |
| Denser AI | AI Chatbot | Open source | Tel Aviv, Israel | — | — |
| AI Search Engine | Open source | — | — | — | |
| Rawq | Conversational AI | Open source | Tel Aviv, Israel | — | — |
| Postintelligencecontracts | LegalTech | Open source | — | — | — |
| Kaliai | Foundation Model | Open source | San Francisco, United States | — | — |
| Askjoyna | Agentic AI | Open source | San Francisco, United States | — | — |
| Dataforeveryone | AI Search Engine | Open source | San Francisco, United States | — | — |
| Arena | Artificial Intelligence | Open source | Berkeley, USA | $250.0M | 71 |
| 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 |
| Composio | Agentic AI | Open source | San Francisco, United States | $50.0M | 59 |
| Tavily | Generative AI | Open source | Tel Aviv, Israel | $5.0M | 57 |
| MIMintlify / mcpt | Developer Tools | Open source | San Francisco, United States | — | 57 |
| 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 |
| Deepjudge Ai | LegalTech | Open source | Tel Aviv, Israel | $53.4M | 54 |
| Chalk.ai | LegalTech | Open source | San Francisco, United States | — | 48 |
| Taskade | SpaceTech | Open source | New York, United States | $1.0M | 46 |
| Seek AI | AI Coding Assistant | Open source | Tel Aviv, Israel | — | 46 |
| Apideck | API Platform | Open source | Unknown, Unknown | — | 46 |
| Adot | E-commerce | Open source | San Francisco, United States | — | 43 |
| Productivity | Open source | — | — | 42 | |
| Raindrop | AI Search Engine | Open source | Moscow, Russia | $32.8M | 40 |
| GrackerAI | Agentic SEO | Open source | Tel Aviv, Israel | — | 33 |
| Qualifire | Generative AI | Open source | — | — | 32 |
| MemGPT | Foundation Model | Open source | — | — | 28 |
| Vibranium Dome | AI Agents | Open source · Self-hostable | — | — | 23 |
| Recallguru | AI Search Engine | Open source | — | — | 21 |
| Langbase | Agentic AI | Open source | San Francisco, United States | — | 20 |
| Conversational AI | Open source | — | — | 17 | |
| WebWright | API Platform | Open source | — | — | 11 |
| POPostgres MCP | Database | Open source | San Francisco, United States | — | 10 |
| PRPrivateGPT | AI Search Engine | Open source · Self-hostable | — | — | 5 |
| Coworker.ai | HR Tech | Open source | — | — | — |
| Tripvalet | Travel Tech | Open source | Tel Aviv, Israel | — | — |
| Zenlawyer | LegalTech | Open source | Tel Aviv, Israel | — | — |
| Studybolt | EdTech | Open source | Tel Aviv, Israel | — | — |
| Biblelens | AI Search Engine | Open source | — | — | — |
| Consensus360 | AI Search Engine | Open source | — | — | — |
| Justemail | AI Search Engine | Open source | Tel Aviv, Israel | — | — |