Pipedrive - Sales pipeline software that gets you organized. Helps you focus on the right deals, so easy to use that salespeople just love it. Great for small teams.
GrexIt - Manage Tasks, Customer Support and Sales right from your Gmail inbox. Turn your Gmail into a powerful collaboration tool.
Zoho CRM - Omnichannel CRM for Businesses of all sizes
Mailor - Shared inbox, team portal and smart notifications
Freshsales CRM - A full-fledged CRM for high-velocity sales teams.
Airmail for iOS - One of the best Mac email clients, now on iPhone