While I’m a huge fan of Eclipse IDE, I recently discovered Aptana. Aptana is build on Eclipse but optimized for use with Ajax libraries and scripting languages like JavaScript, Ruby and PHP. Like they state it themselves. And you know what? It is as they say. For so far I tried it out. It works really smooth and since I’m used to eclipse it doesn’t take 30 minutes to know how everything works.
If you’re a web developer aptana is worth a try.
I couldn’t decide yet if it’s better, the free version seems to have some options disabled. In the meanwhile it’s been some time that I used eclipse+wtp/pdt so a comparison is rather hard to make. I’ll have to switch back to eclipse+wtp/pdt to do a good review.