icepick is described as 'A fuzzy text selector for files and anything else you need to select. Use it from vim, from the command line, or anywhere you can run a shell command. Reimplementation of selecta in Rust'. There are more than 10 alternatives to icepick for Mac, Linux, Windows, Vim and BSD. The best alternative is fzf, which is both free and Open Source. Other great apps like icepick are fzy (Free, Open Source), Percol (Free, Open Source), Peco (Free, Open Source) and Selecta (Free, Open Source).
fzf is a general-purpose command-line fuzzy finder. * No dependencies * Blazingly fast * The most comprehensive feature set * Flexible layout using tmux panes * Batteries included * Vim/Neovim plugin, key bindings and fuzzy auto-completion