Delta Patcher vs ROM Bin Patcher (rombp)

Delta Patcher is a free desktop application for creating and applying xdelta patches to files on Linux, macOS, and Windows. Create mode records the differences between an original and modified file in a new patch. Apply mode takes the original file expected by that patch and its matching .xdelta file to produce a patched output. The application includes the xdelta3 engine, so a separate command-line installation is not needed. Checksum validation can flag a source file that does not match, and users may preserve a backup of the original. Creation settings include compression level, secondary compression, source window, checksum, and an optional description. Version 3.1.5 added support for files larger than 4 GB. Delta Patcher is open source under GPL-2.0. Downloads are ZIP archives hosted on GitHub, with no separate installer. The project directs users to GitHub for issues, discussions, source code, and releases.

ROM Bin Patcher (rombp) is a free utility for applying IPS and BPS patch files to ROMs, a process commonly used for retro gaming modifications. The maker built it primarily for the RG350M handheld running OpenDingux, and it also runs on desktop Linux. The maker reports testing on the RG350M and Ubuntu 20.04; other OpenDingux MIPS64 handhelds may work, but testing is reported only for the RG350M. To install on OpenDingux, the instructions point users to the latest OPK on the GitHub releases page. When patching, rombp first makes a copy of the source ROM, leaving the original file intact. It saves the patched ROM in the patch file’s directory, using the patch file’s name. Command-line options specify the input ROM, patch type, and output file; starting without options opens the SDL interface. The RG350 build links against uclibc and SDL2. The repository includes an MIT license that permits use and modification subject to its terms and disclaims warranties and liability.