USXPM (UNIX-Style Xdelta Patch Maker) is ISXPM-Lite. You lose GUI but you gain speed and efficiency:
Special features
- Primary focus is creation of Steam game patches еliminating the need to compare old and new versions of the game at all by using direct change info from Steamdb game update page or premade changed files list;
- Using fast hybrid compare method (first check file size, only calculate and check CRC if sizes are the same) to compare old and new versions when Steamdb/changed files list is unavailable or when making patch for non-Steam game or non-game data;
- USXPM automatically calculates free space requirements for USXPM manual patch applier.
