Open source focus
Paperswan is open source
Open Source Alternatives to Paperswan
60 open source AI Search Engine options similar to Paperswan, 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.
- KIKira Systems10LegalTechToronto, Canada
Open source
GPT Researcher13Agentic AIOpen source
Andraste32Agentic AISan Francisco, United StatesOpen source
GoumiFoundation ModelBeaverton, United StatesOpen source
Tosly.onlineAgentic AIOpen source
KaliaiFoundation ModelSan Francisco, United StatesOpen source
Perplexity AI71Search EngineSan Francisco, United States$591.4MOpen source
Vectara60Agentic AIPalo Alto, United States$40.0MOpen source
Taskade49SpaceTechNew York, United States$1.0MOpen source
Isacus46LegalTechTel Aviv, Israel$700KOpen source
Briefbridge36AI Search EngineTel Aviv, Israel$1.5MOpen source
LlamaAi (DefiLlama)10FintechOpen source
PrivateGPT5AI Search EngineToronto, CanadaOpen source · Self-hostable
42research4AI Search EngineTel Aviv, IsraelOpen source
AskjoynaAgentic AISan Francisco, United StatesOpen source
UszoningAI Search EngineTel Aviv, IsraelOpen source
PostintelligencecontractsLegalTechOpen source
EvolvinglabAgentic AIOpen source
FastclaudeAI Search EngineOpen source
Open and AsyncAgentic AISan Francisco, United StatesOpen source
SecondarybrainAI Search EngineSan Francisco, United StatesOpen source
RedbuyE-commerceOpen source
Bloomberg L.P.82FintechNew York, United States$60.1BOpen source
- MOMoonshot AI68Frontier AI LabBeijing, China$3.9B
Open source
Dust65Agentic AIParis, France$15.0MOpen source
Entire62Artificial Intelligence$60.0MOpen source · Self-hostable
Composio59Agentic AISan Francisco, United States$50.0MOpen source
Tavily57Generative AITel Aviv, Israel$5.0MOpen source
giniX54Generative AITel Aviv, IsraelOpen source
Deepjudge Ai54LegalTechTel Aviv, Israel$53.4MOpen source
Anon53Agentic AI$6.5MOpen source
Chalk.ai48LegalTechSan Francisco, United StatesOpen source
Zed46Agentic AISan Francisco, United States$95.5MOpen source
Adot43E-commerceSan Francisco, United StatesOpen source
- Why-Health42Productivity
Open source
Noumena AI35Agentic AIתל אביב - יפו, IsraelOpen 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
Langchain-Chatchat11Open SourceOpen source · Self-hostable
TinyFish3Artificial IntelligenceSan Francisco, United StatesOpen source
CasezLegalTechTel Aviv, IsraelOpen source
BiblelensAI Search EngineOpen source
- LoireLegalTechSan Francisco, United States
Open source
CasecompassLegalTechTel Aviv, IsraelOpen source
DowjoFoundation ModelOpen source
BieniekAgentic AIOpen source
ClauderizerAI Coding AssistantOpen source
CaddioAI Search EngineTel Aviv, IsraelOpen source
DataforeveryoneAI Search EngineSan Francisco, United StatesOpen source
CommitbenchAI Coding AssistantOpen source
HainexusFoundation ModelOpen source
RevochatConversational AIOpen source
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Open source
BuildtoexitAI Search EngineSan Francisco, United StatesOpen source
TripvaletTravel TechTel Aviv, IsraelOpen source
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| Company | Sector | License | HQ | Funding | Score | Website |
|---|---|---|---|---|---|---|
| KIKira Systems | LegalTech | Open source | Toronto, Canada | — | 10 | |
| GPT Researcher | Agentic AI | Open source | — | — | 13 | |
| Andraste | Agentic AI | Open source | San Francisco, United States | — | 32 | |
| Goumi | Foundation Model | Open source | Beaverton, United States | — | — | |
| Tosly.online | Agentic AI | Open source | — | — | — | |
| Kaliai | Foundation Model | 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 | |
| Taskade | SpaceTech | Open source | New York, United States | $1.0M | 49 | |
| Isacus | LegalTech | Open source | Tel Aviv, Israel | $700K | 46 | |
| Briefbridge | AI Search Engine | Open source | Tel Aviv, Israel | $1.5M | 36 | |
| LlamaAi (DefiLlama) | Fintech | Open source | — | — | 10 | |
| PrivateGPT | AI Search Engine | Open source · Self-hostable | Toronto, Canada | — | 5 | |
| 42research | AI Search Engine | Open source | Tel Aviv, Israel | — | 4 | |
| Askjoyna | Agentic AI | Open source | San Francisco, United States | — | — | |
| Uszoning | AI Search Engine | Open source | Tel Aviv, Israel | — | — | |
| Postintelligencecontracts | LegalTech | Open source | — | — | — | |
| Evolvinglab | Agentic AI | Open source | — | — | — | |
| Fastclaude | AI Search Engine | Open source | — | — | — | |
| Open and Async | Agentic AI | Open source | San Francisco, United States | — | — | |
| Secondarybrain | AI Search Engine | Open source | San Francisco, United States | — | — | |
| Redbuy | E-commerce | Open source | — | — | — | |
| Bloomberg L.P. | Fintech | Open source | New York, United States | $60.1B | 82 | |
| MOMoonshot AI | Frontier AI Lab | Open source | Beijing, China | $3.9B | 68 | |
| Dust | Agentic AI | Open source | Paris, France | $15.0M | 65 | |
| Entire | Artificial Intelligence | Open source · Self-hostable | — | $60.0M | 62 | |
| Composio | Agentic AI | Open source | San Francisco, United States | $50.0M | 59 | |
| Tavily | Generative AI | Open source | Tel Aviv, Israel | $5.0M | 57 | |
| giniX | Generative AI | Open source | Tel Aviv, Israel | — | 54 | |
| Deepjudge Ai | LegalTech | Open source | Tel Aviv, Israel | $53.4M | 54 | |
| Anon | Agentic AI | Open source | — | $6.5M | 53 | |
| Chalk.ai | LegalTech | Open source | San Francisco, United States | — | 48 | |
| Zed | Agentic AI | Open source | San Francisco, United States | $95.5M | 46 | |
| Adot | E-commerce | Open source | San Francisco, United States | — | 43 | |
| Productivity | Open source | — | — | 42 | ||
| Noumena AI | Agentic AI | Open source | תל אביב - יפו, Israel | — | 35 | |
| 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 | |
| Langchain-Chatchat | Open Source | Open source · Self-hostable | — | — | 11 | |
| TinyFish | Artificial Intelligence | Open source | San Francisco, United States | — | 3 | |
| Casez | LegalTech | Open source | Tel Aviv, Israel | — | — | |
| Biblelens | AI Search Engine | Open source | — | — | — | |
| LegalTech | Open source | San Francisco, United States | — | — | ||
| Casecompass | LegalTech | Open source | Tel Aviv, Israel | — | — | |
| Dowjo | Foundation Model | Open source | — | — | — | |
| Bieniek | Agentic AI | Open source | — | — | — | |
| Clauderizer | AI Coding Assistant | Open source | — | — | — | |
| Caddio | AI Search Engine | Open source | Tel Aviv, Israel | — | — | |
| Dataforeveryone | AI Search Engine | Open source | San Francisco, United States | — | — | |
| Commitbench | AI Coding Assistant | Open source | — | — | — | |
| Hainexus | Foundation Model | Open source | — | — | — | |
| Revochat | Conversational AI | Open source | — | — | — | |
| AI Search Engine | Open source | — | — | — | ||
| Buildtoexit | AI Search Engine | Open source | San Francisco, United States | — | — | |
| Tripvalet | Travel Tech | Open source | Tel Aviv, Israel | — | — | |
| Zenlawyer | LegalTech | Open source | Tel Aviv, Israel | — | — |