CiviCRM is a web-based, open source, internationalized suite of software for constituency relationship management, that falls under the broad rubric of customer relationship management. Developed by CiviCRM
License: Open Source
CiviCRM is a powerful open-source CRM tailored for nonprofits with extensive customization and community support, while TidyHQ offers a more user-friendly, all-in-one solution focused on small organizations with simpler needs.