Although I use Pygmynote on a daily basis, I haven't tweaked it for a while. Over the weekend, though, I finally got around to implementing a couple of small features as well as cleaning and tweaking the code.
Most command-line tools on Linux come with documentation accessible through the man command. But scrolling up and down the help file trying to figure out how to make a tool do what you want is not always the most efficient way to go. Enter Cheat, a simple Python-based tool that allows you to access cheatsheets for command-line tools.
IT specialists often rely on automatic notification for status messages and logfiles by email. A Python script named Zeyple uses GPG to protect potentially sensitive messages against unauthorized viewing.
7z, ZIP, TAR.GZ, GZIP -- there are literally dozens of archiving formats. On top of that, there is also a multitude of tools for managing archives in different formats, and each tool has its own commands and parameters.
If you are serious about using your Raspberry Pi as a platform for writing and testing code, you'll appreciate the WebIDE software developed by Adafruit.