JPCX is a Java package that provides a way to encode and decode PCX image data. Its main features are fast reading of meta-data by reading minimal data, the ability to read from any InputStream one time or any FileInputStream many times, support for both 8-bit indexed color and 24-bit true-color images, support for encoding and decoding both RLE and uncompressed, and the ability to encode and decode to different target streams easily.
libjpeg-turbo is a high-speed version of libjpeg for x86 and x86-64 processors. It uses SIMD instructions (MMX, SSE, SSE2) to accelerate baseline JPEG compression and decompression. libjpeg-turbo is generally 2-4 times as fast as the unmodified version of libjpeg. It also includes a wrapper library for the TurboJPEG API used by VirtualGL and TurboVNC. It was originally based on libjpeg/SIMD but has improved support for Mac OS X, 64-bit platforms, 32-bit and big endian pixel formats (RGBA/BGRA/ABGR/ARGB), accelerated Huffman encoding/decoding, and various other fixes.