simple rdist rcs and tools , srtools , synchronizing
...the main two to mention:
simple rdist distributes files or commands across hosts. srdist(1) understands rcs(1) files and host based files. there are several other tools see README.
rcs tools has a few things , like "late-checkins" to check for files that one forgot to check in an dorev to force check in / do easy check in (avoiding complicated options).
host based files is a way to allow hosts to distribute all files without clobbering host specific files. and with that ...
srtools(1) makes partially synchronizng hosts easy. Also can be a far easier way to do incremental or nightly backups. ...
Send files from any place to an HTTP server. Transfer files in parts / chunks. Transfer big files (and small). Have limited upload file size? Multiple files at once? Behind a firewall (no scp/rsync/sftp)? This is for you. Made in PHP.