LeadMaster - The LeadMaster LeadMasterCRM All-in-One solution includes: marketing automation, lead management, email marketing, website integration & much more.
Zendesk - Zendesk is a beautiful, lightweight help-desk solution.
Servetel - Communication management solution
Freshdesk - Freshdesk is a cloud-based customer support software that lets you support customers through traditional channels like phone and email, social channels like Facebook and Twitter, and your own branded community
Outreach - Outreach Is Your Sales Communication Platform
HelpScout - Help Scout is a simple, straightforward way to provide excellent support