GoodSync is a very famous, simple but user-friendly and reliable automatic file/folder backup/sync utility. It can quickly and automatically analyze, compare and then sync or backup your files/folders among a variety of local or online storage spaces on multiple devices or platforms.
SkyFonts is a lightweight and free web fonts synchronizer (includes downloading & managing) for Windows & Mac OS X. It was developed by Fonts.com and supported by Google Fonts. In fact, for most of us, we use it as the best free web fonts service - Google Fonts' synchronizer, downloader, installer and manager.
eM Client is a all-powerful free/commercial desktop email client for Windows all platforms (XP+). In addition to being popular due to its modern and friendly UI, eM Client also provides many extra convenient features, such as calendar, tasks, contacts and even online chat.
We all know that Microsoft's Bing Search has an impressive feature - changing a beautiful high-definition picture every day (almost each is a story) as its homepage background. So many guys maybe like this feature and want to make it work on their own PCs, so as to make the desktop wallpaper keep fresh everyday (along with our mood).
FreeFileSync is an open source file/folder comparison and synchronization freeware with visual, clear and friendly UI, specially designed for assisting data backup on Windows, Linux and Mac OS X.
PathSync is a folder synchronization applet, can be used to backup data, or the synchronization between USB flash disk and hard disk. The synchronous mechanism includes judging (bidirectionally) from the file condition - new or old; synchronizing from local to remote by force or vice versa. And after making an analysis, you can specify the synchronization mode for individual file.