fzf

fzf is a command-line fuzzy finder by Junegunn Choi, written in Go and distributed as a single static binary. Pipe any list into it — files, command history, processes, git branches, hostnames, bookmarks — and it opens an interactive interface where your query matches results fuzzily in real time, tolerating omitted characters and typos. The matching is fast enough to chew through millions of items in milliseconds, per the project's own claim; no independent benchmark has been published, but the tool's ubiquity in shell workflows speaks to the performance in practice.

The shell integration is where fzf earns its keep: Ctrl-R fuzzy-searches command history, Ctrl-T finds files and inserts them at the cursor, and Alt-C jumps to directories, across Bash, Zsh, and Fish. Beyond that it is an event-driven toolkit: --bind maps keys to actions like execute, reload, and preview scrolling, --preview shows file contents alongside results (commonly paired with bat), and --tmux renders the finder as a tmux popup. It also ships a Vim/Neovim plugin and fuzzy auto-completion for supported commands. MIT-licensed and everywhere.

Install via Homebrew (brew install fzf), your distro package manager, or by cloning the repo and running its install script (~/.fzf/install), which sets up the shell key bindings. The git-clone route also installs the Vim plugin. Set FZF_DEFAULT_COMMAND and FZF_DEFAULT_OPTS to customize the default file source and options globally.