Voiptime Cloud Call Center - Cloud call center & telemarketing solution
CiviCRM - A Constituent relationship management for the Civic Sector
CallKite - Your website’s video call center in just one click.
Odoo CRM - Open Source CRM
MangoCRM - MangoCRM is a Contact management for the rest of us. Add Unlimited users for $9/mo. No annual contracts. No hidden fees. No complications. Manage your business billing, contacts, leads, and more with Mango.
Salesforce - CRM software solutions and enterprise cloud computing from salesforce.com, the leader in CRM and platform as a service.