ifttt - IFTTT puts the internet to work for you. Create simple connections between the products you use every day.
MailStore - MailStore Home - A 100% free single-private-user desktop solution
Air Explorer - Air Explorer is a software to manage all your multiple cloud drives (like Dropbox, Onedrive, Google Drive, Mega, Mediafire, Box, Hidrive, Yandex, Baidu,...) as well as WebDav and FTP connections.
Gmvault - Backup the emails in your Gmail account.
FileCloud - FileCloud is an enterprise file share, sync and mobile access solution.
SysTools Gmail Backup - Backup Gmail Emails, Contacts, Calendar, and Google Drive Storage File by SysTools Gmail Backup Solution