Online Vault Backup - Online Vault Backup is a cloud storage service that allows you backup your data while having unlimited storage.
Beyond Compare - Beyond Compare allows you to compare files and folders.
Rebel Backup - Rebel Backup lets you make encrypted backups of your important files to Dropbox or Google Drive.
Meld - What is Meld? Meld is a visual diff and merge tool targeted at developers.
iMazing Mini - Back up your devices automatically, wirelessly & privately
WinMerge - WinMerge is an open source differencing and merging tool for Windows.