last year there where a lot of answers to this question. nowadays most of them vanished. it has a name, internals are much saner, the release tools work again, we have a recent stable version and half of website is rewritten or filled with fresh content.
some of most demanded features where implemented but still there is one big thing. the installation cpan had its hurdles due some misquoting of install bathes in the build process. stupid bug but fortanetly fixed by recent patch from andreas kaschnitz++. currently some internals are opened to rewrite the Document::* namespace modules and to make the view::editpanel settings and events work for more than one instance of STC. when its done, patch applied and the test suite fixed Kephra will finally install flawlessly under Linux and Mac.