Inverse - Team conversations and knowledge sharing on any webpage
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
Client Proofing by Pixpa - Share, proof and deliver your work to clients.
Clean Email - Clean Email is an online service that empowers you to take control of your mailbox.
Task Pigeon - Create, assign & manage your teams everyday tasks
DuoCircle - DuoCircle provides enterprise spam filtering and email management solutions.