LZX Delta

LZX Delta is a derivative of the LZX compressed data format, developed by Microsoft.

It is used, for example, in Microsoft's Offline Address Book files.

It is sometimes abbreviated LZXD (but it seems that not everything called "LZXD" is necessarily LZX Delta).

Software

 * libmspack
 * https://github.com/Lonami/lzxd

Links

 * Microsoft Open Specifications: LZX DELTA Compression and Decompression