Bitrix24 - Bitrix24 is a free (for small businesses) social enterprise platform. It is a united work space which handles the many aspects of daily operations and tasks. Create your own social intranet in minutes!
MailStore - MailStore Home - A 100% free single-private-user desktop solution
VOGSY - Professional service automation tool built on Google G Suite
Gmvault - Backup the emails in your Gmail account.
Office Timesheets - Professional Services Automation
SysTools Gmail Backup - Backup Gmail Emails, Contacts, Calendar, and Google Drive Storage File by SysTools Gmail Backup Solution