Platform 14.4.1 (Apr 02, 2017). Please donate.
300+ real apps, *new* Pencil2D (Jan 10, 2018)
Over 950 million app downloads
Any idea of online sites I can do this
Although this site caters to software for personal computers, your best bet would be Google drive or a similar like service, Dropbox etc. There are hardware type backups like wifi enabled HDDs and flashdrives, but I'm not familiar with those.