Arachnophilia is a web page development workshop and general programming tool for those using HTML.
It's written entirely in Java so it works across platforms but it immediately raises issues of speed and startup times. The Java engine must load before Arachnophilia can run so it's not the quickest HTML editor to start or use. It also adds the complication that if you do suffer any problems with Arachnophilia, it could be hard to tell whether it's your Java engine or the program itself that it's the problem.
The other problem with this is that you can't print out your code because it's very hard to implement a reliable cross platform printing client on the Java platform. On the plus side, Arachnophilia is well presented and very easy to use and follow. It only uses essential features and functions so it's not bloated and it organizes the different functions such as FTP, image selection and documents very well.
Arachnophilia is a decent HTML editor that will work on whatever platform you need it for although because it's based on Java, you may find it a bit slow at times.