grexit.comSoftware by GrexIt Software
Front - multi-channel inbox service for collaborative teams
Evercontact - Your contacts always up to date and automatically with Evercontact.
Mailor - Shared inbox, team portal and smart notifications
CONTACTBOX - CONTACTBOX combines the simplicity of an address book with effective functions of a CRM system.
Gmail Sender Icons - Know the sender's company by adding favicons to Gmail
Bigin by Zoho CRM - Pipeline-centric CRM built and priced for small businesses