Classical Greek and the *nix World

• The Thesaurus Linguae Graecae is now pretty much indispensable to Classicists. It has been around for nearly thirty years now and contains virtually everything written in ancient Greek that still exists. Its existence led to the development of such things as...
• the Perseus project, an "evolving digital library" for Classical studies. In addition to Greek (and Latin) texts, this includes an encclopedia, a large collection of art and archaeological information, and some really serious linguistic tools (including morphological parsers for Greek and Latin and electronic versions of both Lewis & Short and LSJ). You can use this online or purchase a CD product (not marketed directly by the Perseus Project). Perseus was originally a Macintosh-only product. There is now a Platform-Independent version available (it runs only under Windows (95 or later) or Macintosh). Interesting point: the online Digital Library, which is actually the more comprehensive product (and will probably be the one receiving most of the future development) is hosted on a Linux box (Red Hat) and served up by Apache.
• Peter Heslin's Diogenes is a Perl suite that lets you do a wide variety of complex searches on TLG files and indexes. Diogenes can produce output in just about any known Greek encoding and either HTML or LaTeX.
• Naoto Takahashi's cgreek package for emacs makes it possible for me to leave emacs even less. I wrote some utilities that extend its functionality.
• Ian Ruffell's collection Linux for Classicists has a great deal more information in this vein.
• Project Archelogos is currently developing a variety of computer tools for the study of ancient Greek philosophy.