Open source focus
Open Source Alternatives to Foundin
60 open source AI Search Engine options similar to Foundin, 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
Anon53Agentic AI$6.5MOpen source
Zed46Agentic AISan Francisco, United States$95.5MOpen source
Noumena AI40Agentic AIתל אביב - יפו, IsraelOpen source
Andraste32Agentic AISan Francisco, United StatesOpen source
TruebloomAgentic AISan Francisco, United StatesOpen source
GoumiFoundation ModelOpen source
- HainexusFoundation Model
Open source
KaliaiFoundation ModelSan Francisco, United StatesOpen source
CybernomicFoundation ModelOpen source
BieniekAgentic AIOpen source
Nomic AI59AI Infrastructure StackNew York City, United States$19.0MOpen source · Self-hostable
Tavily57Generative AITel Aviv, Israel$5.0MOpen source
Brave Search API52AI Search EngineSan Francisco, United StatesOpen source
Answers36AI Search EngineSan Francisco, United States$1.5BOpen source
Pluum34Travel TechTel Aviv, IsraelOpen source
Firstprinciplesgtm33Agentic AISan Francisco, United StatesOpen source
- Melodocs18Foundation Model
Open source
Search House AI14AI Search EngineTel Aviv, IsraelOpen source
GPT Researcher13Agentic AIOpen source
lIdée10AI Search EngineTel Aviv, IsraelOpen source
360sprint4Agentic AITel Aviv, IsraelOpen source
TinyFish3Artificial IntelligenceSan Francisco, United StatesOpen source
- NetjutsuAgentic AI
Open source
DowjoFoundation ModelOpen source
RedbuyE-commerceOpen source
SecondarybrainAI Search EngineSan Francisco, United StatesOpen source
- FingeringsAgentic AI
Open source
- EvolvinglabAgentic AI
Open source
AskjoynaAgentic AISan Francisco, United StatesOpen source
Geo PlusAgentic AITel Aviv, IsraelOpen source
UszoningAI Search EngineTel Aviv, IsraelOpen source
CiteranksAI Search EngineOpen source
AdvostackAI Search EngineOpen source
GhoztAgentic AIOpen source
- XAxAI78Frontier AI LabPalo Alto, United States$90.0B
Open source
Algolia75Search TechnologySan Francisco, United States$334.2MOpen source
Lovable75No-Code/Low-CodeStockholm, Sweden$880.2MOpen source
Arena71Artificial IntelligenceBerkeley, USA$250.0MOpen source
Vectara60Agentic AIPalo Alto, United States$40.0MOpen source
Vanna AI56Agentic AINew York, United States$2.5MOpen source · Self-hostable
Artificial Societies55Agentic AISan Francisco, United States$4.8MOpen source
Taskade46SpaceTechNew York, United States$1.0MOpen source
Base4444No CodeTel Aviv, IsraelOpen source
Adot43E-commerceSan Francisco, United StatesOpen source
- Why-Health42Productivity
Open source
Raindrop40AI Search EngineMoscow, Russia$32.8MOpen source
Postiz37Agentic AITel Aviv, Israel$1.0MOpen source
GrackerAI33Agentic SEOTel Aviv, IsraelOpen source
Dydas33Agentic AITel Aviv, IsraelOpen source
herocon.ai27Agentic AI$2.0MOpen source
Gemini CLI27AI Tools & AppsOpen source · Self-hostable
Readwise Reader25Consumer AppRaleigh, United StatesOpen source
Hordus AI25AI Search Engineתל אביב - יפו, IsraelOpen source
Briefbridge23AI Search EngineTel Aviv, Israel$1.5MOpen source
pywebagent22Generative AIOpen source
Berrybell22Agentic AITel Aviv, IsraelOpen source
Codel15Agentic AIOpen source · Self-hostable
- Mightymob14Agentic AITel Aviv, Israel
Open source
Reworkd13Agentic AITel Aviv, IsraelOpen source
| Company | Sector | License | HQ | Funding | Score |
|---|---|---|---|---|---|
| Perplexity AI | Search Engine | Open source | San Francisco, United States | $591.4M | 71 |
| Anon | Agentic AI | Open source | — | $6.5M | 53 |
| Zed | Agentic AI | Open source | San Francisco, United States | $95.5M | 46 |
| Noumena AI | Agentic AI | Open source | תל אביב - יפו, Israel | — | 40 |
| Andraste | Agentic AI | Open source | San Francisco, United States | — | 32 |
| Truebloom | Agentic AI | Open source | San Francisco, United States | — | — |
| Goumi | Foundation Model | Open source | — | — | — |
| Foundation Model | Open source | — | — | — | |
| Kaliai | Foundation Model | Open source | San Francisco, United States | — | — |
| Cybernomic | Foundation Model | Open source | — | — | — |
| Bieniek | Agentic AI | Open source | — | — | — |
| Nomic AI | AI Infrastructure Stack | Open source · Self-hostable | New York City, United States | $19.0M | 59 |
| Tavily | Generative AI | Open source | Tel Aviv, Israel | $5.0M | 57 |
| Brave Search API | AI Search Engine | Open source | San Francisco, United States | — | 52 |
| Answers | AI Search Engine | Open source | San Francisco, United States | $1.5B | 36 |
| Pluum | Travel Tech | Open source | Tel Aviv, Israel | — | 34 |
| Firstprinciplesgtm | Agentic AI | Open source | San Francisco, United States | — | 33 |
| Foundation Model | Open source | — | — | 18 | |
| Search House AI | AI Search Engine | Open source | Tel Aviv, Israel | — | 14 |
| GPT Researcher | Agentic AI | Open source | — | — | 13 |
| lIdée | AI Search Engine | Open source | Tel Aviv, Israel | — | 10 |
| 360sprint | Agentic AI | Open source | Tel Aviv, Israel | — | 4 |
| TinyFish | Artificial Intelligence | Open source | San Francisco, United States | — | 3 |
| Agentic AI | Open source | — | — | — | |
| Dowjo | Foundation Model | Open source | — | — | — |
| Redbuy | E-commerce | Open source | — | — | — |
| Secondarybrain | AI Search Engine | Open source | San Francisco, United States | — | — |
| Agentic AI | Open source | — | — | — | |
| Agentic AI | Open source | — | — | — | |
| Askjoyna | Agentic AI | Open source | San Francisco, United States | — | — |
| Geo Plus | Agentic AI | Open source | Tel Aviv, Israel | — | — |
| Uszoning | AI Search Engine | Open source | Tel Aviv, Israel | — | — |
| Citeranks | AI Search Engine | Open source | — | — | — |
| Advostack | AI Search Engine | Open source | — | — | — |
| Ghozt | Agentic AI | Open source | — | — | — |
| XAxAI | Frontier AI Lab | Open source | Palo Alto, United States | $90.0B | 78 |
| Algolia | Search Technology | Open source | San Francisco, United States | $334.2M | 75 |
| Lovable | No-Code/Low-Code | Open source | Stockholm, Sweden | $880.2M | 75 |
| Arena | Artificial Intelligence | Open source | Berkeley, USA | $250.0M | 71 |
| Vectara | Agentic AI | Open source | Palo Alto, United States | $40.0M | 60 |
| Vanna AI | Agentic AI | Open source · Self-hostable | New York, United States | $2.5M | 56 |
| Artificial Societies | Agentic AI | Open source | San Francisco, United States | $4.8M | 55 |
| Taskade | SpaceTech | Open source | New York, United States | $1.0M | 46 |
| Base44 | No Code | Open source | Tel Aviv, Israel | — | 44 |
| 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 |
| Postiz | Agentic AI | Open source | Tel Aviv, Israel | $1.0M | 37 |
| GrackerAI | Agentic SEO | Open source | Tel Aviv, Israel | — | 33 |
| Dydas | Agentic AI | Open source | Tel Aviv, Israel | — | 33 |
| herocon.ai | Agentic AI | Open source | — | $2.0M | 27 |
| Gemini CLI | AI Tools & Apps | Open source · Self-hostable | — | — | 27 |
| Readwise Reader | Consumer App | Open source | Raleigh, United States | — | 25 |
| Hordus AI | AI Search Engine | Open source | תל אביב - יפו, Israel | — | 25 |
| Briefbridge | AI Search Engine | Open source | Tel Aviv, Israel | $1.5M | 23 |
| pywebagent | Generative AI | Open source | — | — | 22 |
| Berrybell | Agentic AI | Open source | Tel Aviv, Israel | — | 22 |
| Codel | Agentic AI | Open source · Self-hostable | — | — | 15 |
| Agentic AI | Open source | Tel Aviv, Israel | — | 14 | |
| Reworkd | Agentic AI | Open source | Tel Aviv, Israel | — | 13 |