SugarSync is described as 'The best way to backup, access, sync, and share all your files and folders including documents, photos, videos, and music — from any computer or mobile device' and is a very popular Cloud Storage service in the backup & sync category. There are more than 100 alternatives to SugarSync for a variety of platforms, including Windows, Web-based, Mac, iPhone and Android apps. The best SugarSync alternative is Dropbox, which is free. Other great apps like SugarSync are Nextcloud, Syncthing, Google Drive and MEGA.