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SuiteCRM is an open source Customer Relationship Management (CRM) software solution that provides a 360-degree view of your customers and business.

SuperOffice is a CRM software designed to help businesses enhance customer relationships, improve sales efficiency, and streamline customer service processes.

Teamleader Focus streamlines business management by integrating CRM, project management, and invoicing into a single, user-friendly platform, enhancing productivity and organization.

Tryton.org is an open-source business software platform from Belgium, focusing on modularity and scalability. It stands out with its comprehensive suite of applications for enterprise resource planning (ERP), differing through its community-driven development.

vTiger CRM is a customer relationship management (CRM) software that centralizes customer data to help businesses manage their interactions with current and potential customers.

WORKetc is a cloud-based business management software that combines CRM, project management, billing, sales, support, and collaboration tools for small to medium-sized businesses.

WP ERP is a full-featured, open-source Enterprise Resource Planning (ERP) solution for WordPress, providing tools for CRM, HRM, Accounting, and Project Management.

Founded in Copenhagen in 2007, Zendesk began as a customer service software provider. It has since expanded into CRM, offering solutions that improve customer interactions, support, and engagement across various industries worldwide.