Fluxfont is a specialized tool that attempts to tackle the privacy concerns raised by the possibility to collect information about the fonts installed on a system. Such information can be used to uniquely identify a system. With Fluxfonts, new fonts are randomly created and removed to prevent the same fingerprint from being recreated.
FIGlet is a program for making large letters out of ordinary text. It prints its input using large characters made up of ordinary screen characters. FIGlet output is generally reminiscent of the sort of "signatures" many people like to put at the end of email and UseNet messages. It is also reminiscent of the output of some banner programs, although it is oriented normally, not sideways.
gbdfed is a GTK+-based BDF font editor. Multiple fonts can be loaded from the command line. Multiple fonts can be open at the same time. Cutting and pasting glyphs between fonts, font name and property editing, and built-in online help. It imports PK/GF, HBF, PSF, CP, Linux FNT, VFONT, OpenType/TrueType, and some FON/FNT fonts. It can export PSF2 fonts.
QuesoGLC is a free implementation of the OpenGL Character Renderer. The OpenGL Character Renderer (GLC) is a state machine that provides OpenGL programs with character rendering services including scale and rotate text and draw text using lines, filled triangles, or bitmaps. QuesoGLC is based on the FreeType library, provides Unicode support, and is designed to be easily ported to any platform that supports both FreeType and the OpenGL API.
libtholoura is a text-image distortion library, which is useful for sites that want to ensure that a human (and not a bot) is viewing pages. It is optimized to produce images of strings distorted in a way that makes it impossible for an OCR to read, but humans can. The library takes a string (preferably ASCII) string and is able to dynamically produce PNG indexed images. The distortion filters are external plugins.