Brew PHP switcher is a simple shell script to switch versions of PHP
The Node.js version manager you'll adore, crafted just for Fish
Simple Python version management
Groom your app’s Ruby environment
TraceMAC is a command-line Layer 2 traceroute for Cisco switches
nvm wrapper for fish-shell
Tool for installing and managing multiple versions of Nim language
An interactive way to peruse your git history from the terminal