A library to convert microsoft WMF file format to something useful, currently bindings exist to convert them to onscreen X graphics, to the GIF and to FIG.
Image toolkit for DOS, Win16, and Win32 supporting TIFF, LZW, PackBits, GIF, JPEG, lossy, PCX, PNG, TGA, Targa, BMP, DIB, BIF, raw data, bitmap, TWAIN, scanning, image processing, and printing. (Source code is available, but this is a commercial library.)