- elasticsearch by elastic, 79k stars. Distributed RESTful search and analytics engine written in Java
- faiss by facebookresearch, 42k stars. Library for fast nearest-neighbor search over dense vectors
- searxng by searxng, 40k stars. Privacy-respecting metasearch engine that aggregates results from many sources
- qdrant by qdrant, 36k stars. High-performance vector database and similarity search engine written in Rust
- qmd by tobi, 31k stars. Local command-line search engine for docs, notes and knowledge bases
- typesense by typesense, 27k stars. In-memory search engine with typo tolerance, written in C++
- xerj by xerj-org, 19k stars. Single Rust binary for full-text, vector and hybrid search with an MCP server
- turbovec by RyanCodrai, 17k stars. Vector index in Rust with Python bindings for nearest neighbor search
- Jackett by Jackett, 16k stars. Proxy server that exposes torrent and usenet trackers through one API
- manticoresearch by manticoresoftware, 12k stars. Full-text, vector and hybrid search engine with real-time indexing and SQL access
- hister by asciimoo, 6.3k stars. Personal search engine over your browsing history with an MCP interface
- wigolo by KnockOutEZ, 5.5k stars. Local-first web search, fetch and crawl over MCP for coding agents
- openrag by langflow-ai, 4.7k stars. Single-package RAG platform built on Langflow, Docling and OpenSearch
- sentrysearch by ssrajadh, 4.6k stars. Semantic search over video files using Gemini or Qwen3-VL embeddings
- zvec-grep by zvec-ai, 4.3k stars. Local BM25 search over code and files with a CLI for humans and agents
- morphik-core by morphik-org, 3.7k stars. Multimodal retrieval engine for RAG over documents and images
- zoekt by sourcegraph, 2.1k stars. Fast trigram-based code search engine for large repositories
- kividb by kividbio, 1.1k stars. Multi-threaded Redis and Valkey compatible server with vector search
- PdfGptIndexer by raghavan, 677 stars. RAG tool that indexes PDF text with FAISS for fast search
- DocuBrowser by linuxrebel, 557 stars. Local AI search engine that indexes documents on your machine
- SCM by allenv0, 529 stars. Searches stored images and videos on macOS by their visual content
- witchcraft by dropbox, 524 stars. Rust library for fast local search over documents using embeddings
- open-jobs by elliottdehn, 399 stars. Dataset of about 3M job listings from 36 ATS with search tooling
- metasearch-rust by MikeLuu99, 117 stars. Metasearch engine in Rust that aggregates results from other search sites
- IndexFlow-core by IndexFlowing, 69 stars. Indexing service that pushes sitemap URLs to search engines with quota control
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