Platform 18.0.1 (June 15, 2021). Please donate.
400+ real apps (43GB), Over 990 million downloads
New: FileOptimizer (Sep 23, 2021)
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.