Best Coding Libs, SDKs (2026)

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FLAMEHAVEN FileSearch

Self-hosted RAG file search engine (FastAPI) with keyword/semantic/hybrid modes, citations, API keys, and Docker quickstart.

4.3 (6)

· free

Full review

FLAMEHAVEN FileSearch is a self-hosted RAG search engine built with FastAPI, enabling instant production deployment in 3 minutes. It supports multiple search modes, including keyword, semantic, and hybrid, with automatic typo correction and confidence-scored results. The tool also boasts enterprise-grade security, a cost-effective pricing model, and 34 supported file formats. Key features include ultra-fast vector generation, self-adapting BM25 pool, and source attribution with every answer linking back to the originating document and chunk. Users can access various framework SDKs, including LangChain, LlamaIndex, and Haystack, with flexible storage options and admin dashboards for real-time metrics and quota management. The search engine supports various models, including Gemini and Ollama, with zero API cost. Users can also deploy the tool with Docker, using either the quick start instructions or a detailed step-by-step guide for a more customized deployment. FLAMEHAVEN FileSearch can be hosted on a user's infrastructure, ensuring enterprise-grade security and the ability to manage costs directly. Overall, the tool offers a production-ready solution for self-hosted RAG search engines.

• BM25+hybrid retrieval
• Keyword, semantic, and hybrid search modes
• Ultra-fast vector generation
• Source attribution with every answer
• Support for 34 file formats
• Flexible storage options