Mechvibes
Mechvibes – lets you play mechanical keyboard sounds as you type on your keyboard
Superpaper
Superpaper is a free and open-source, multi-platform software for automatically changing your desktop wallpaper with support for working with multiple monitors
BingWall
BingWall – free and open source, utility to browse/download/setting bing’s wallpaper of the day to GNOME desktop
WallpaperDownloader
WallpaperDownloader – free and open source, software for downloading, managing and automatically changing wallpapers from the Internet for Linux
Variety
Variety – free and open source wallpaper downloader and manager for Linux systems
FreeFileSync
FreeFileSync – free and open source data backup software that helps you synchronize files and folders
Grsync
Grsync – free and open source program for syncing folders, files and creating backups, GTK GUI for rsync
luckyBackup
luckyBackup – free and open source, powerful, fast and reliable backup and sync tool