These are some the command line tools I use regularly and are not part of a standard POSIX environement.
Generally I prefer tools that are simple, fast and do not require lots of dependencies.
A multi-protocol downloader.
A cool replacement to
cat with syntax highlighting and git integration.
A great manager for your dotfiles. You can find my configuration files here.
ls on steroids with more features and better defaults.
An alternative to
find which is a lot more natural to use.
Excellent backup tool.
grep perfect for searching a code base.
A decentralized file synchronisation tool.
A light and fast terminal file manager using vim-like commands.