fsearch brings millisecond whole-disk search to macOS

fsearch is a sharp developer utility whose real breakthrough is making “where did I put that file?” feel instantaneous, though its headline benchmark should be read as a hardware-specific claim rather than a universal guarantee.

• –The M4 Max benchmark reports 1.3 ms median whole-disk name searches and 9 ms content searches across millions of files. [GitHub](https://github.com/noahdunnagan/fsearch)
• –Fuzzy matching, typo tolerance, path filters, regex, and indexed grep make it more useful for code-heavy workflows than basic filename launchers.
• –FSEvents-based updates avoid repeated full-disk scans, while the daemon, JSON-lines socket, and Rust crate make the engine easy to embed.
• –Full Disk Access is required for complete coverage, and the macOS-only scope limits portability.
• –The project is compelling infrastructure for local developer search, but it is not itself an AI tool; its AI relevance comes from improving retrieval around codebases and local data.