Kit CRM - A CRM for your Facebook page
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.
Veloxy - A sales enablement app. Your calendar on steroids!
Zoho CRM - Omnichannel CRM for Businesses of all sizes
Streak for Mobile - The CRM for Gmail
Freshsales CRM - A full-fledged CRM for high-velocity sales teams.