Yesterday I’ve had a chat with AgentM and we were talking about IgniteFusion (which I honestly never dealt with before). With that, I’ve had a look around the web and my email inbox and decided to compile a brief overview:
BlueDragon is obviously the most famous one. I’ve heard a lot of good stuff about IgniteFusion and Railo from various sources, never played with Coral’s WebBuilder but as far as I got it from their site, they’re following a different concept.
The most crucial issue about alternative CF engines is probably the language and it’s compability to Macromedia’s implementation of CFML. All of them offer some sort of comparison tables to give you an idea if and how you might be able to run your applications.