Plone is an enterprise-grade open-source CMS released in 2001, built on Python and known for fine-grained permissions, multi-level workflows and native multilingual support, adopted by governments and international organizations for security- and compliance-heavy scenarios.
Crownpeak is an enterprise Digital Experience Platform (DXP) founded in Denver, US in 2001, built cloud-natively on Microsoft Azure with built-in GDPR/CCPA consent management and WCAG accessibility scanning for compliance-driven large organizations.
Contao is a German open-source PHP content management system that originated as TYPOlight in 2006 and was renamed in 2010, known for accessibility (WCAG) and native multilingual websites. Built on Symfony components with no license fees, it suits government, association and media sites.
Blackboard is an education technology company founded in Washington, D.C. in 1997 and one of the oldest learning management systems (LMS) globally, serving thousands of universities. After merging with Anthology in 2021, it offers a complete online teaching solution from course management and virtual classrooms to accessibility and learning analytics.