FontMapper is a font texture generator for game developers. It allows you to turn a font you have installed to a PNG texture of tightly packed glyphs, accompanied by a text file describing the glyphs' properties and texture coordinates. You can read these in a game to render fonts. FontMapper supports Unicode (although only the Basic Multilingual Plane, i.e. the 16-bit codepoints), and each glyph can have its own size, i.e. fonts are not necessarily monospaced. Currently, FontMapper is command-line only, although there might be a GUI frontend in the future.
D:GameVFS is a minimalist virtual filesystem library for the D programming language oriented at game developers. It provides an easy-to-use API for filesystem-independent file/directory manipulation. It supports basic VFS functionality. Files and directories can be created, read, and written, but not deleted. There are no security features (e.g., D:GameVFS can't handle a situation in which a file it's working with is deleted outside the program).