Accompany - Accompany platform integrates with email, contacts, social feeds and more to keep you informed on your professional connections.
Highrise - Save and organize notes and email conversations for up to 30,000 customers and contacts. Keep track of proposals and deals.
Cloze - Smarter Relationship Management
Propeller CRM - Small business CRM with deep Gmail integration
SuiteFlow - SuiteFlow is a product to customer management solution offering a host of tools to manage inventory, contacts, invoices etc.
NetHunt CRM - Turn Gmail into a smart CRM