ADR Tools : A command-line tool for working with Architecture Decision Records (ADRs).
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.
docopt : Command-line interface description language
DevDocs : DevDocs combines multiple API documentations in a fast, organized, and searchable interface.
chezmoi : Manage your dotfiles across multiple diverse machines, securely.
The TLDR pages are a community effort to simplify the beloved man pages with practical examples.