Award-winning features include comprehensive editing and debugging, plus intelligent tools for regular expressions, team development, customization and unparalleled extensibility. The result is a powerful coding environment for framework stacks like Ruby on Rails and CakePHP and client libraries such as the Yahoo! UI Library and Dojo. A single license covers you across Windows, Mac OS X and Linux.
Komodo IDE (Linux/x86 libstdc++6): http://downloads.activestate.com/Komodo/releases/5.1.4/Komodo-IDE-5.1.4-30485-linux-libcpp6-x86.tar.gz
Komodo Edit (Windows): http://downloads.activestate.com/Komodo/releases/5.1.4/Komodo-Edit-5.1.4-3797.msi
Other features include Vi emulation, Emacs keybindings, code folding and code snippets.