Alphabet Soup is a project which attempts to determine a number of things about the shapes of letters in several different writing systems. First, it hypothesizes a set of basic building blocks that all letters are built up from. Second, it hypothesizes a set of rules, a grammar or syntax, which defines how those pieces combine to make different letters. It can generate individual letters, randomize letters in an input string to create weird but readable text, or generate random strings of symbols.
FONTpage is a utility for viewing, managing, and generating images of fonts. It can install and delete per-user fonts as well as (when run as root) system-wide fonts. It displays fonts, has a full alpha-numeric popup window, and allows you to change the font size and color, background color, font face, bold, and italics. It also has the ability to input the text to be displayed, which you can choose to save as a PNG file. It is handy to view fonts and styles quickly, or to make "logo" graphics. And naturally, it is a simple way to try out fonts without dipping into the command line. The source code as well as Slackware packages are available.
Font Industry (字体工业) makes big charset font creation easier. The program converts a scanned in grid sheet, containing a lot of glyphs, into a bitmap font. The glyphs will be automatically indexed by Unicode or with a user-selected charset order. The bitmap font can then be converted to an outline font like TTF or OpenType font.
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.