Jacksum 4 is here – a major release of my open-source checksum tool (current release: 4.0.2).
• 586 algorithms, and --info tells you whether one is considered broken, and why
• --check-strict reports changed, added, removed and unreadable files
• Output styles matching shasum, openssl dgst and ClamAV's sigtool
CLI, Java library, and HashGarten as a GUI. GPL-3.0, Java 21+.
Trust, but verify:
https://loefflmann.blogspot.com/2026/10/jacksum-4-is-on-web.html