Komodo Edit

Komodo Edit is a free and open source text editor designed for dynamic programming languages, inclduing PHP, Python, Ruby, JavaScript, Perl, Tcl, XML, HTML5, CSS and more. With Komodo Edit you can enjoy a development process supported by syntax coloring, folding, background syntax checking, and excellent auto-complete and code intellisense. Komodo Edit is developed and released as open source software by ActiveState, in an effort to provide an more accessible version of their commercial software Komodo IDE.