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Xdelta vs HDiffPatch: catalog facts
Xdelta	HDiffPatch
Best for: Creating and applying binary patches to large files	Best for: Developers building patch-based software updates
Free Free and open source under the Apache 2.0 licence.	Free Free and open source under the MIT licence.
Windows, Command line	Windows, macOS, Linux, 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	Diffs whole directories, not just single files Handles large files with limited memory All 3 strengths for HDiffPatch Diffs whole directories, not just single files Handles large files with limited memory Usable as CLI or embedded library
Command-line only, with no graphical interface Building from source requires CMake	Command-line only, no graphical interface Documentation leans towards developers
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: MIT
No account needed	No account needed
Offline features available	Offline features available
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 HDiffPatch github.com/sisong/HDiffPatch Catalog checked October 2, 2026

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