If you don’t already use Coda, you should give it a try. Free trial available for download here! This is my favorite tool for editing and writing code, HTML, CSS, PHP, has a great CSS editor and the preview works really well (unlike dreamweaver)! Check out the new additions, such as Plug-ins. Teach Coda new tricks, and extend its functionality. Download plug-ins that others have written, or write your own plug-ins. If you’re a developer and not just starting out, check out the Coda Developer Zone.