netsurf demands a indepth review of all the commercial software for backup and free alternatives. Especially since its heading back to university time for most people.
Wiki here shows a quick list of programs which support linux, windows and mac.
please make sure to mention things like:
-:cost for 100gb for a years worth of storage
-:limits on T/C such as only one pc or you have to buy the software then pay for storage.
-:security policies ie how willing would they be to hand over your details to a seize warrant/general data storage and privacy
-:headless/cronjob support and GUI support
-:generally how good is the software
hope you get round to doing this as backup solutions which do incremental are a royal pain in the ass especially the encryption and signing side of things. loosing the key when trying to perform bare metal restore or just recover a single file without having to practically be the developer of it.