AZip is a free Zip Archive Manager with unique features such as: built-in content Search, smart archive Update, archive Recompression.
The goal is to keep the user interface as simple as possible and bother the user the least possible with options or useless gadgets.
More details and screenshots on the AZip Web site: http://azip.sf.net
Alire crate: https://alire.ada.dev/crates/azip
Mirror: https://github.com/zertovitch/azip
DIASER, Geo-data duplication long-term archive system & WAN vault. Manage mixed data archives generated by existing backup software. Ensure availability using commodity hardware. Retain administrative and financial control.
Very simple disk synchronization suitable for maintaining a backup directory. I built it to keep Photos and MP3s on my NAS in sync with my laptop and desktop. Will do one-way or two-way (mirrored), but does not delete. All Java, no GUI.