LeadMaster - The LeadMaster LeadMasterCRM All-in-One solution includes: marketing automation, lead management, email marketing, website integration & much more.
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.
Servetel - Communication management solution
Streak - Manage customers inside Gmail
Outreach - Outreach Is Your Sales Communication Platform
NetHunt CRM - Turn Gmail into a smart CRM