We are using TinyMCE as our preferred HTML RTE (Rich Text Editor). It is very powerful, pluggable, pretty scalable (but NOT so tiny…). I like it very much. The only serious problem was that it was uncompatible with our preferred javascript library: Prototype. Some dirty hacks did exist to force the compatibility but they were not enough.

Finally, beginning with the 2.0RC4 release TinyMCE is now compatible with prototype. Read what they said:

I’ve modified TinyMCE to be compatible with these kinds of scripts that modifies internal functions/object prototypes. So TinyMCE will work with prototype.js since it’s seems to be a very common library nearly every report of incompatiblities seems to be due to this script.

Spocke - Main developer of TinyMCE

:)