Propeller CRM - Small business CRM with deep Gmail integration
Cloze - Smarter Relationship Management
Highrise - Save and organize notes and email conversations for up to 30,000 customers and contacts. Keep track of proposals and deals.
Streak - Manage customers inside Gmail
NetHunt CRM - Turn Gmail into a smart CRM
ZynBit - ZynBit simplifies customer relationship management with automation and insights.