UFFS — Ultra Fast File Search
Benchmark-driven NTFS search engine for Windows. Open source under MPL-2.0, maintained by Sky, LLC.
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Become a financial contributor.
Financial Contributions
Recurring contribution
Power User Supporter
Everything in Community tier, plus participation in quarterly Q&A sessions with the engineering team. Ask anything about the roadmap, benchmarks, o... Read more
$50 USD / month
Recurring contribution
Company Supporter
Your company's name and logo on the UFFS supporters page. Priority weighting in roadmap feedback. Recognition in release notes. Automatic invoice p... Read more
$100 USD / month
UFFS — Ultra Fast File Search is all of us
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Thank you for supporting UFFS — Ultra Fast File Search.
About
UFFS reads the NTFS Master File Table directly, bypasses Windows file-enumeration APIs entirely, and answers targeted queries in 0–3 ms daemon-side — scale-tested to 100
million+ files. One Rust engine powers the CLI, background daemon, TUI, and an MCP server that exposes deterministic local filesystem search to AI agents (Claude, Cursor,
etc.).
Published, reproducible benchmarks show UFFS winning 30/30 head-to-head cells against Everything (voidtools) — ~2.8× faster at p50 — on documented targeted-query workloads.
**Sponsorships fund:**
- Windows code-signing certificate (removes SmartScreen "Publisher: Unknown" warnings)
- Benchmark infrastructure and hardware
- Release engineering and packaging
- Enterprise pilot support
The core engine, CLI, daemon, and MCP server are open source under MPL-2.0 — forever. Built and maintained by Sky, LLC.
million+ files. One Rust engine powers the CLI, background daemon, TUI, and an MCP server that exposes deterministic local filesystem search to AI agents (Claude, Cursor,
etc.).
Published, reproducible benchmarks show UFFS winning 30/30 head-to-head cells against Everything (voidtools) — ~2.8× faster at p50 — on documented targeted-query workloads.
**Sponsorships fund:**
- Windows code-signing certificate (removes SmartScreen "Publisher: Unknown" warnings)
- Benchmark infrastructure and hardware
- Release engineering and packaging
- Enterprise pilot support
The core engine, CLI, daemon, and MCP server are open source under MPL-2.0 — forever. Built and maintained by Sky, LLC.
Our team
Robert Nio
Admin