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Xdelta vs bsdiff: catalog facts
Xdelta	bsdiff
Best for: Creating and applying binary patches to large files	Best for: Developers building or applying binary file updates
Free Free and open source under the Apache 2.0 licence.	Free Free and open source under the BSD-2-Clause license.
Windows, Command line	Command line
Produces compact binary patches between file versions Uses the standard VCDIFF format from RFC 3284 All 4 strengths for Xdelta Produces compact binary patches between file versions Uses the standard VCDIFF format from RFC 3284 Available as both a CLI tool and a C library Actively maintained	Creates and applies binary patches Designed for changes to executable files
Command-line only, with no graphical interface Building from source requires CMake	bsdiff requires substantial memory Uses bzip2
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: BSD-2-Clause
No account needed	Not stated if an account is needed
Offline features available	Not stated if it works offline
Official website Full listing and sources Sources for Xdelta github.com/jmacd/xdelta Catalog checked October 2, 2026	Official website Full listing and sources Sources for bsdiff daemonology.net/bsdiff Catalog checked October 8, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.