gSyncing is a cloud-based backup and sync application that enables users to synchronize their data across multiple devices. With gSyncing, users can securely back up their files and folders, sync them between multiple computers, and access them anytime, anywhere. The application is designed to make managing and transferring data easy and secure. gSyncing is also capable of automatically backing up files to multiple cloud storage providers, including Dropbox, Google Drive, and OneDrive. In addition, users can share files with friends and family members, as well as set up automatic synchronization of data across multiple devices. gSyncing also provides a secure connection for data transfer, ensuring that users' data is safe and secure.
AkrutoSync
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Outlook4Gmail
Discontinued Discontinued January 30, 2008 http://support.google.com/a/bin/answer.py?hl=en-uk&hlrm=en&answer=2716936