CiviCRM - A Constituent relationship management for the Civic Sector
Beekavach - All in one office suite
Odoo CRM - Open Source CRM
Zoho CRM - Omnichannel CRM for Businesses of all sizes
WORKetc CRM - All-in-one business management system. CRM + Social + Projects + Billing
eSign by SquidSoft - User Friendly, Highly Secured eSign App for Multi Document, Multi Signer and Multi Company.