Saskatoon

If you're a Mac OS X user, Saskatoon is a text editor made specifically for coders. Based on Peter Borg's Smultron, this software has several key features that make it a great addition to your toolkit.

One of its biggest benefits is its user-extensible syntax coloring, which allows you to customize the text editor to fit your needs. It also has a regular expression search and replace feature, which can be a huge time-saver when you're working on large files.

For users who frequently run code in a shell environment, Saskatoon also has a "run-in-shell" feature. Additionally, its text transforms can help streamline your workflow by automating tedious tasks.

Saskatoon also includes a code snippets drawer where you can save and access commonly-used code. The editor's HTML pretty-printing and preview functions make it easy to work on web projects, with excellent keyboard control for added convenience.

Overall, Saskatoon is a powerful and flexible text editor that's perfect for Mac OS X users looking for a tool that can handle all their coding needs.