Novocall is an international callback software to help you capture and distribute qualified sales call leads for inside sales and sales teams.
Callpage - Turn website visitors into sales calls. Use CallPage and provide immediate free phone callback to your leads in 28 seconds.
CiviCRM - A Constituent relationship management for the Civic Sector
LiveCall - LiveCall is a callback software that enables users to talk by voice with people who are currently visiting a website in 25 seconds.
Odoo CRM - Open Source CRM
Inbound Rocket - Converts visitors into leads, subscribers & customers
WORKetc CRM - All-in-one business management system. CRM + Social + Projects + Billing