1. Sublime Text
If you’ve been in the industry for any length of time, chances are you’ve heard of Sublime Text. Sublime is a powerful and flexible code with a robust feature set and a powerful Python language-based plug-in system, so you can further add functionality to the application. The $59 price tag may seem a bit steep (Sublime is free to try for as long as you like), but this program delivers.
With Sublime Text 2 Alpha currently available in Windows, Linux and Mac OS, Sublime offers up tools such as Goto Anything‚ a fuzzy-find utility that lets you quickly search and navigate to any project file, multi-select capabilities for fast multi-column editing, project management and instant project switching. It also offers many other features you’d expect a great editor to have — line syntax highlighting, regexp find and replace, and code snippets libraries.
2. Kate
3. SmartGit
4. CSSTidy
Read more: Mashable