rxvt-unicode is a clone of the well known terminal emulator rxvt, modified to store text in Unicode and to use locale-correct input and output. It also supports mixing multiple fonts at the same time, including Xft fonts, real transparency, and an optional embedded Perl interpreter that allows you to extend your terminal easily.
acoc is a regular-expression based colour formatter for programs that display output on the command-line. It works as a wrapper around the target program, executing it and capturing the stdout stream. Optionally, stderr can be redirected to stdout, so that it, too, can be manipulated. acoc then applies matching rules to patterns in the output and applies colours to those matches.
Fontlinge searches for font files, sorts them into folders by name and look and with human readable names, stores gathered font information in a database, generates previews and posters, finds and removes duplicates, and reunites PostScript font families. Also, Fontlinge has a Web interface to browse through your fonts. It shows detail previews and font info, provides font download as a tarball, and has the possibility to sort fonts.
The fontutils package includes the programs bpltobzr, bzrto, charspace, fontconvert, gsrenderfont, imageto, imgrotate, limn, and xbfe. These create fonts for use with Ghostscript or TeX (starting with a scanned type image and converting the bitmaps to outlines), convert between font formats, etc. The package also includes the libraries libbzr.a, libgf.a, libpbm.a, libpk.a, libtfm.a, and libwidgets.a.
TextSearch is a program to search through a set of text files in a directory structure. Each document is searched using a regular expression and an overview of the results is shown as a tree structure. By clicking on a file, it can be viewed, with matches being highlighted. As opposed to other programs out there, its focus is not so much on statistics, i.e. how often a word would occur in an entire corpus of files, but rather on occurrences in single files.