Rick,

 

Right now we are using the NetSpell. It supports multiple languages. The languages can also be created from scatch. Cute Editor automatically switch the dictionaries when you set the culture name of the editor using Editor.CustomCulture Property.

 

We don't have the file comparison tool right now. We don't have plan to implement it in the new version.

 

All file comparison tools I know are desktop apps. Sorry for the inconvenience.