Marker is a command palette for the terminal. It lets you bookmark commands (or commands templates) and easily retreive them with the help of a real-time fuzzy matcher.
testssl.sh is a free command line tool which checks a server's service on any port for the support of TLS/SSL ciphers, protocols as well as recent cryptographic flaws and more.
a pipeable JSON parser written in Bash
Sub is a model for setting up shell programs that use subcommands, like git or rbenv using bash. Making a sub does not require you to write shell scripts in bash, you can write subcommands in any scripting language you prefer.