Crmble - Easy peasy crm for Trello
Onesheet CRM - The Simple CRM for Google Sheets
Freshsales CRM - A full-fledged CRM for high-velocity sales teams.
SquareOne - Email. Stress-free.
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.
Vergify - All-in-one CRM for small businesses designed to save time