Hiver - Manage Customer Support, Sales and Projects right from your Gmail inbox. Collaborate with Shared Labels, Shared Contacts, email notes, email reminders and email templates
Google Groups - Google Groups allows you to create and participate in online forums and email-based groups with a rich experience for community conversations.
Clean Email - Clean Email is an online service that empowers you to take control of your mailbox.
DownToMeet - DownToMeet is a platform to organize, find, and attend group events.
MailClark - The Slack bot for external communications
Mighty Networks - Mighty Networks enables entrepreneurs, organizations, and companies to create and grow a community-powered brand.