docopt : Command-line interface description language
how2 : stackoverflow from the terminal.
how2 finds the simplest way to do something in a unix shell. It's like man, but you can query it in natural language.
ADR Tools : A command-line tool for working with Architecture Decision Records (ADRs).
StyleDocco : StyleDocco generates documentation and style guide documents from your stylesheets.
scriv : Scriv is a command-line tool for helping developers maintain useful changelogs. It manages a directory of changelog fragments. It aggregates them into...
The TLDR pages are a community effort to simplify the beloved man pages with practical examples.