Compare software

fff vs ugrep: catalog facts
fff	ugrep
Best for: Developers and AI agents searching very large codebases	Best for: People who search code and files with grep and want archive search and an interactive mode
Free Free to use under the MIT licence.	Free Free and open source.
Windows	Windows, macOS, Linux, Command line
Searches file names and contents without building an index Shown working on repositories of tens of millions of lines All 3 strengths for fff Searches file names and contents without building an index Shown working on repositories of tens of millions of lines Integrations aimed at AI agents, Neovim, Rust, C and Node.js	Compatible with grep options Interactive text interface for building queries All 4 strengths for ugrep Compatible with grep options Interactive text interface for building queries Searches inside nested archives and compressed files Boolean and fuzzy search
Little documentation on its homepage Aimed at developers rather than general desktop file search	Large option set takes time to learn Interactive interface is terminal-only
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: BSD-3-Clause
Not stated if an account is needed	No account needed
Not stated if it works offline	Offline features available
Official website Full listing and sources Sources for fff fff.dmtrkovalenko.dev Catalog checked October 2, 2026	Official website Full listing and sources Sources for ugrep github.com/Genivia/ugrep Catalog checked September 23, 2026

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