Agilon One - Agilon One is a Nonprofit CRM software solution that connects and gathers information on constituents.
EspoCRM - EspoCRM is open source CRM (Customer Relationship Management) software that allows you to see, enter and evaluate all your company relationships regardless of the type.
Donorhut - Donorhut offers cloud fundraising software for charities and non-profits of any size.
CiviCRM - A Constituent relationship management for the Civic Sector
Little Green Light - Illuminating Data. Advancing Nonprofits.
Less Annoying CRM - A simple customer relationship manager made just for small businesses. Manage contact info, track leads, and never miss a follow-up.