Freshsales CRM - A full-fledged CRM for high-velocity sales teams.
Onesheet CRM - The Simple CRM for Google Sheets
Wobaka - Refreshingly Simple CRM And Email Automation
Streak - Manage customers inside Gmail
Followup.cc - FollowUp for email is a lightweight productivity suite that keeps your conversations and tasks from slipping through the cracks. Set perfectly timed reminders that arrive at the top of your inbox, right when you need them.
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.