I think that for many [most?] people, the Google Drive desktop app, along with Google Drive, or Microsoft's automatic OneDrive sync that's built into Windows, adequately does the job(s) that BACKUP-TUBE is designed for. And/or there's Windows File History [Settings ->System -> Storage -> View Backup Options], which syncs files/folders stored on a USB stick or drive when it's plugged in. One hassle with OneDrive is that once it's set up to sync with [My] Documents, the desktop etc., you have to set up a junction for any other folders you want to add.
tenforums[.]com/tutorials/92892-sync-any-folder-onedrive-windows-10-a.html
That said, BACKUP-TUBE itself doesn't seem to be a bad app. You will get emails from Abylon Software once you request a key. Most of the impact from installing the app comes from the installation of Microsoft C/C++ runtime files [2015 version], though Abylon gets credit for supplying the up to date version -- [too] often you have to run Windows Update immediately afterward to get the latest security patches. [You can usually avoid those C/C++ runtime installs by installing whatever app in a VM, then copying the program's folder to a regular copy of Windows, since you probably already have multiple copies of those runtimes installed.] That runtime is the main reason installing BACKUP-TUBE added 571 new registry entries in my Win7 32-bit VM.
Otherwise it adds Abylon & uninstall keys in HKLM, along with the BackupBoxService, which does show up in Control Panel -> Admin Tools -> Services, where you can change the default autostart. In HKCU you get another Abylon key. The app itself takes up just over 65MB with 129 files, 5 folders, with a new APM folder in ProgramData, a LOGS folder in Public Documents, and an Abylonsoft folder in Documents.