Dux Soup - Dux-Soup is a lead generation tool for LinkedIn.
Hiver - Manage Customer Support, Sales and Projects right from your Gmail inbox. Collaborate with Shared Labels, Shared Contacts, email notes, email reminders and email templates
CloudSponge - Companies from every industry use CloudSponge’s Contact Picker to get access to their users’ address books.
Clean Email - Clean Email is an online service that empowers you to take control of your mailbox.
BuzzBuilder - BuzzBuilder is a web-based lead generation tool that manages targeted email marketing campaigns and generates B2B sales leads.
DuoCircle - DuoCircle provides enterprise spam filtering and email management solutions.