Pardon me cause I'm sometimes really slow on the uptake. I rummaged around the site and the proggy looks great but I was unable to discover (easily anyways--I'm lazy) wether or not it is an HTML editor. Is it?
It depends on your definition. If
notepad qualifies then Scintilla is over qualified.
It is a programmers text editor. For languages that it recognizes such as HTML and C, it will colour code text that is part of the language specification. As such it is an HTML editor but not WYSIWYG. I have used it for small amounts of HTML editing (page of links that is my homepage on my C: drive). The colour coding allows easy recognition of breaks in patterns. In C for example missing a {} or a () are obvious due to disruptions of the colour coding.
I have not explored its abilities in depth so it wouldn't surprise me if it had other uses. For example the Tools menu includes an option for Build whose function I don't know, I never needed to find out.