CiviCRM is a web-based, open source CRM application designed to help organizations and associations manage their contacts, memberships, activities, events, and donations. It is built on top of the popular and free LAMP (Linux, Apache, MySQL, and PHP) stack and allows organizations to store and manage contact information, track activities and communications, set up and track events and membership, process payments, and manage other aspects of their business and nonprofit activities. CiviCRM is built to be used by organizations of all sizes and can be tailored to their individual needs. It is highly customizable and has a wide range of features and options to help organizations improve their operations and streamline their processes.
TidyHQ is a modern alternative to CiviCRM, much simpler but just as powerful in many ways. It still has an API that we use