stb_vorbis.c | audio | decode ogg vorbis files from file/memory to float/16-bit signed output
stb_image.h | graphics | image loading/decoding from file/memory: JPG, PNG, TGA, BMP, PSD, GIF, HDR, PIC
stb_truetype.h | graphics | parse, decode, and rasterize characters from truetype fonts
stb_image_write.h | graphics | image writing to disk: PNG, TGA, BMP
stb_image_resize.h | graphics | resize images larger/smaller with good quality
stb_rect_pack.h | graphics | simple 2D rectangle packer with decent quality
stb_sprintf.h | utility | fast sprintf, snprintf for C/C++
stretchy_buffer.h | utility | typesafe dynamic array for C (i.e. approximation to vector<>), doesn't compile as C++
stb_textedit.h | user interface | guts of a text editor for games etc implementing them from scratch
stb_voxel_render.h | 3D graphics | Minecraft-esque voxel rendering "engine" with many more features
stb_dxt.h | 3D graphics | Fabian "ryg" Giesen's real-time DXT compressor
stb_perlin.h | 3D graphics | revised Perlin noise (3D input, 1D output)
stb_easy_font.h | 3D graphics | quick-and-dirty easy-to-deploy bitmap font for printing frame rate, etc
stb_tilemap_editor.h | game dev | embeddable tilemap editor
stb_herringbone_wang_tile.h | game dev | herringbone Wang tile map generator
stb_c_lexer.h | parsing | simplify writing parsers for C-like languages
stb_divide.h | math | more useful 32-bit modulus e.g. "euclidean divide"
stb_connected_components.h | misc | incrementally compute reachability on grids
stb.h | misc | helper functions for C, mostly redundant in C++; basically author's personal stuff
stb_leakcheck.h | misc | quick-and-dirty malloc/free leak-checking