I'm always interested in tools that can download only changed chunks, or repair damaged files without having to re-download the whole lot. Habit, after being on extremely slow connections for about 15 years.
* I've abused webseed support in torrent clients to do similar things - a downloader based on the torrent chunk hashing format would be quite interesting
See also:
* http://atterer.org/jigdo
* https://multipar.eu/
* I've abused webseed support in torrent clients to do similar things - a downloader based on the torrent chunk hashing format would be quite interesting
* rsync can do it, maybe
* http://xdelta.org/ - have used this to patch Raspberry Pi images