Accusoft offers PICTools™ to deliver advanced image compression, decompression, and editing technologies as C libraries (DLLs) on multiple platforms. The PICTools products provide access to high performance imaging technologies through a high-performance, flexible interface.
PICTools technologies are supported across multiple environments, including 32-bit Windows, 64-bit Windows, 32-bit Solaris (SPARC), 64-bit Solaris (SPARC), 32-bit Linux, 64-bit Linux, IBM AIX (RS6000), and Mac OS X (Power PC). Accusoft optimizes PICTools technology for performance in specific environments through the use of assembly language programming and processor-specific optimizations. The PICTools architecture supports rapid portability and processor-specific speed optimizations on additional platforms (contact us to discuss porting PICTools to your platform).
If you are looking for C or C++ imaging libraries, consider: