No doubt, Adobe Dreamweaver is presently one of the most powerful web development tool around. Code completion, syntax highlighting, code collapsing, the application packs in a bunch of awesome features that make your task a lot simple. However, it is a bit expensive, at least for the ones who own a start-up.
So, in case you are looking out for a free alternative to Dreamweaver, try out Aptana Studio 3, a fabulous open source web development tool that offers you almost all that Dreamweaver does.
Find & Replace
Multiple language support