GoodSync - GoodSync provides highly reliable file backup and synchronization for both individuals and businesses.
UKs Kalender - This program helps you organizing your dates and tasks and reminds you of upcoming events.
Syncthing - Syncthing replaces proprietary sync and cloud services with something open, trustworthy and...
Dshutdown - Utilities freeware by Dimio, DShutdown, DSynchronize, HDHacker, DTaskManager and DSpeech
FreeFileSync - FreeFileSync is a free open source data backup software that helps you synchronize files and folders on Windows, Linux and macOS.
rsync - rsync is a file transfer program for Unix systems. rsync uses the "rsync algorithm" which provides a very fast method for bringing remote files into sync.