Alphatk is a text editor. It's most useful for programmers, those writing a lot of TeX or LaTeX documents, and for editing of HTML source files. It has very rich features to aid in writing and editing files of those document types. The programming languages most strongly supported are C, C++, Java, Tcl, Perl, Matlab, in addition to LaTeX and CSS/HTML. Most other common languages (around 50!) are also supported, although perhaps not with quite such a rich feature set. As well as being useful for creating and editing such documents, Alphatk provides a host of facilities for communicating with compilers, diff, patch, version control systems, More...
Version 8.3.3 fixes a very large number of problems. In particular, command-line support is now much improved, and some lost-focus bugs on Mac OS X have been fixed (although some still remain). Also substantial improvements have been made to the TeX interactions, and many other modes. XHTML support is now included.
Mac OS X 10.2 or later, Tcl/Tk 8.4.