Percol is described as 'interactive grep tool in your terminal, commonly used with | (pipe concept on UNIX)' and is an app in the OS & Utilities category. There are seven alternatives to Percol for Linux, Mac, Windows, BSD and Vim. The best alternative is fzf, which is both free and Open Source. Other great apps like Percol are Peco (Free, Open Source), Ultimate Plumber (Free, Open Source), hf (Free, Open Source) and pmenu (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
Ultimate Plumber is a tool for writing Linux pipes interactively with instant live preview. It facilitates building complex pipelines by letting you interactively and incrementally explore text data as you type.