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
Mosh : Remote terminal application that allows roaming, supports intermittent connectivity, and provides intelligent local echo and line editing of user keys...
Debian Policy Manual : This manual describes the policy requirements for the Debian distribution.
The TLDR pages are a community effort to simplify the beloved man pages with practical examples.