Open source focus
Open Source Alternatives to Vaporlens
60 open source AI Search Engine options similar to Vaporlens, 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.
Perplexity AI71Search EngineSan Francisco, United States$591.4MOpen source
Andraste32Agentic AISan Francisco, United StatesOpen source
TinyFish3Artificial IntelligenceSan Francisco, United StatesOpen source
KaliaiFoundation ModelSan Francisco, United StatesOpen source
GoumiFoundation ModelBeaverton, United StatesOpen source
BiblelensAI Search EngineOpen source
Answers36AI Search EngineSan Francisco, United States$1.5BOpen source
GPT Researcher13Agentic AIOpen source
PrivateGPT5AI Search EngineToronto, CanadaOpen source · Self-hostable
DowjoFoundation ModelOpen source
SecondarybrainAI Search EngineSan Francisco, United StatesOpen source
RedbuyE-commerceOpen source
Tosly.onlineAgentic AIOpen source
AskjoynaAgentic AISan Francisco, United StatesOpen source
Arena71Artificial IntelligenceBerkeley, USA$250.0MOpen source
- MOMoonshot AI68Frontier AI LabBeijing, China$3.9B
Open source
Vectara60Agentic AIPalo Alto, United States$40.0MOpen source
Tavily57Generative AITel Aviv, Israel$5.0MOpen source
Anon53Agentic AI$6.5MOpen source
Zed46Agentic AISan Francisco, United States$95.5MOpen source
Isacus46LegalTechTel Aviv, Israel$700KOpen source
GitHits44Developer ToolsHelsinki, Finland$1.5MOpen source · Self-hostable
- Why-Health42Productivity
Open source
Raindrop40AI Search EngineMoscow, Russia$32.8MOpen source
Briefbridge36AI Search EngineTel Aviv, Israel$1.5MOpen source
Noumena AI35Agentic AIתל אביב - יפו, IsraelOpen source
LlamaAi (DefiLlama)10FintechOpen source
42research4AI Search EngineTel Aviv, IsraelOpen source
HainexusFoundation ModelOpen source
AdvostackAI Search EngineOpen source
CybernomicFoundation ModelOpen source
- WiretensorsAI Search Engine
Open source
BieniekAgentic AIOpen source
KeyboardsignalGenerative AIOpen source
TripvaletTravel TechTel Aviv, IsraelOpen source
DataforeveryoneAI Search EngineSan Francisco, United StatesOpen source
IntellaiGenerative AIOpen source
VektorsearchpartnersAI Search EngineTel Aviv, IsraelOpen source
BarakudaInnovation LabOpen source
CiteranksAI Search EngineOpen source
KnowqlAI Search EngineOpen source
- ThebabrainAI Search Engine
Open source
- EvolvinglabAgentic AI
Open source
WulverstoneFoundation ModelOpen source
PostintelligencecontractsLegalTechOpen source
Open and AsyncAgentic AISan Francisco, United StatesOpen source
UseacreAI Search EngineOpen source
Loop IqAI Tools & AppsOpen source
PaperswanAI Search EngineSan Francisco, United StatesOpen source
FastclaudeAI Search EngineOpen source
OpenAI84Artificial IntelligenceSan Francisco, United States$493.9BOpen source
Lovable75No-Code/Low-CodeStockholm, Sweden$1.2BOpen source
Pinecone69AI InfrastructureSan Francisco, United States$138.0MOpen source
Dust65Agentic AIParis, France$15.0MOpen source
z.ai65Foundation ModelSan Francisco, USA$1.3BOpen source
Entire62Artificial Intelligence$60.0MOpen source · Self-hostable
LiteLLM62Foundation ModelSan Francisco, United StatesOpen source · Self-hostable
Nomic AI59AI Infrastructure StackNew York City, United States$19.0MOpen source · Self-hostable
Composio59Agentic AISan Francisco, United States$50.0MOpen source
- MIMintlify / mcpt57Developer ToolsSan Francisco, United States
Open source
| Company | Sector | License | HQ | Funding | Score | Website |
|---|---|---|---|---|---|---|
| Perplexity AI | Search Engine | Open source | San Francisco, United States | $591.4M | 71 | |
| Andraste | Agentic AI | Open source | San Francisco, United States | — | 32 | |
| TinyFish | Artificial Intelligence | Open source | San Francisco, United States | — | 3 | |
| Kaliai | Foundation Model | Open source | San Francisco, United States | — | — | |
| Goumi | Foundation Model | Open source | Beaverton, United States | — | — | |
| Biblelens | AI Search Engine | Open source | — | — | — | |
| Answers | AI Search Engine | Open source | San Francisco, United States | $1.5B | 36 | |
| GPT Researcher | Agentic AI | Open source | — | — | 13 | |
| PrivateGPT | AI Search Engine | Open source · Self-hostable | Toronto, Canada | — | 5 | |
| Dowjo | Foundation Model | Open source | — | — | — | |
| Secondarybrain | AI Search Engine | Open source | San Francisco, United States | — | — | |
| Redbuy | E-commerce | Open source | — | — | — | |
| Tosly.online | Agentic AI | Open source | — | — | — | |
| Askjoyna | Agentic AI | Open source | San Francisco, United States | — | — | |
| Arena | Artificial Intelligence | Open source | Berkeley, USA | $250.0M | 71 | |
| MOMoonshot AI | Frontier AI Lab | Open source | Beijing, China | $3.9B | 68 | |
| Vectara | Agentic AI | Open source | Palo Alto, United States | $40.0M | 60 | |
| Tavily | Generative AI | Open source | Tel Aviv, Israel | $5.0M | 57 | |
| Anon | Agentic AI | Open source | — | $6.5M | 53 | |
| Zed | Agentic AI | Open source | San Francisco, United States | $95.5M | 46 | |
| Isacus | LegalTech | Open source | Tel Aviv, Israel | $700K | 46 | |
| GitHits | Developer Tools | Open source · Self-hostable | Helsinki, Finland | $1.5M | 44 | |
| Productivity | Open source | — | — | 42 | ||
| Raindrop | AI Search Engine | Open source | Moscow, Russia | $32.8M | 40 | |
| Briefbridge | AI Search Engine | Open source | Tel Aviv, Israel | $1.5M | 36 | |
| Noumena AI | Agentic AI | Open source | תל אביב - יפו, Israel | — | 35 | |
| LlamaAi (DefiLlama) | Fintech | Open source | — | — | 10 | |
| 42research | AI Search Engine | Open source | Tel Aviv, Israel | — | 4 | |
| Hainexus | Foundation Model | Open source | — | — | — | |
| Advostack | AI Search Engine | Open source | — | — | — | |
| Cybernomic | Foundation Model | Open source | — | — | — | |
| AI Search Engine | Open source | — | — | — | ||
| Bieniek | Agentic AI | Open source | — | — | — | |
| Keyboardsignal | Generative AI | Open source | — | — | — | |
| Tripvalet | Travel Tech | Open source | Tel Aviv, Israel | — | — | |
| Dataforeveryone | AI Search Engine | Open source | San Francisco, United States | — | — | |
| Intellai | Generative AI | Open source | — | — | — | |
| Vektorsearchpartners | AI Search Engine | Open source | Tel Aviv, Israel | — | — | |
| Barakuda | Innovation Lab | Open source | — | — | — | |
| Citeranks | AI Search Engine | Open source | — | — | — | |
| Knowql | AI Search Engine | Open source | — | — | — | |
| AI Search Engine | Open source | — | — | — | ||
| Agentic AI | Open source | — | — | — | ||
| Wulverstone | Foundation Model | Open source | — | — | — | |
| Postintelligencecontracts | LegalTech | Open source | — | — | — | |
| Open and Async | Agentic AI | Open source | San Francisco, United States | — | — | |
| Useacre | AI Search Engine | Open source | — | — | — | |
| Loop Iq | AI Tools & Apps | Open source | — | — | — | |
| Paperswan | AI Search Engine | Open source | San Francisco, United States | — | — | |
| Fastclaude | AI Search Engine | Open source | — | — | — | |
| OpenAI | Artificial Intelligence | Open source | San Francisco, United States | $493.9B | 84 | |
| Lovable | No-Code/Low-Code | Open source | Stockholm, Sweden | $1.2B | 75 | |
| Pinecone | AI Infrastructure | Open source | San Francisco, United States | $138.0M | 69 | |
| Dust | Agentic AI | Open source | Paris, France | $15.0M | 65 | |
| z.ai | Foundation Model | Open source | San Francisco, USA | $1.3B | 65 | |
| Entire | Artificial Intelligence | Open source · Self-hostable | — | $60.0M | 62 | |
| LiteLLM | Foundation Model | Open source · Self-hostable | San Francisco, United States | — | 62 | |
| Nomic AI | AI Infrastructure Stack | Open source · Self-hostable | New York City, United States | $19.0M | 59 | |
| Composio | Agentic AI | Open source | San Francisco, United States | $50.0M | 59 | |
| MIMintlify / mcpt | Developer Tools | Open source | San Francisco, United States | — | 57 |