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bsdiff vs HDiffPatch: catalog facts
bsdiff	HDiffPatch
Best for: Developers building or applying binary file updates	Best for: Developers building patch-based software updates
Free Free and open source under the BSD-2-Clause license.	Free Free and open source under the MIT licence.
Command line	Windows, macOS, Linux, Command line
Creates and applies binary patches Designed for changes to executable files	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
bsdiff requires substantial memory Uses bzip2	Command-line only, no graphical interface Documentation leans towards developers
Downloadable app	Downloadable app
Open source	Open source
License: BSD-2-Clause	License: MIT
Not stated if an account is needed	No account needed
Not stated if it works offline	Offline features available
Official website Full listing and sources Sources for bsdiff daemonology.net/bsdiff Catalog checked October 8, 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.