Eigen DB

Eigen DB is a vector database that runs entirely in your browser, using WebAssembly and SIMD instructions for fast similarity search. It lets you generate datasets, index vectors, and perform queries without a server. The demo includes a character-frequency embedder to show how it works, with options to export and import databases as binary files, plus persistent storage via the Origin Private File System.

Designed for developers exploring vector search locally, Eigen DB demonstrates that performant database operations can happen client-side. The maker built it with WASM to achieve speeds significantly faster than JavaScript implementations, making it useful for prototyping and learning about vector indexing.