The marketing technology landscape is constantly evolving, and the biggest MarTech companies can vary from country to country. However, some of the biggest MarTech companies in Denmark include:

Episerver: A provider of digital experience and content management solutions, including commerce, content management, and customer insights.

Siteimprove: A provider of website management and optimization solutions, including website analytics and content optimization tools.

Falcon.io: A provider of social media management and customer engagement solutions, including social media listening, publishing, and analytics tools.

Umbraco: An open-source content management system, used by organizations around the world to create and manage their websites.

Trustpilot: A provider of customer review and ratings solutions, helping businesses to collect and showcase customer feedback and improve their reputation.

Provoke: A provider of marketing technology and digital transformation solutions, including marketing automation, content management, and digital analytics.

Content360: A provider of content management and digital marketing solutions, including website development and digital asset management.

This list is not exhaustive, as the Martech landscape is constantly changing and new companies are entering the market all the time. These companies are among the biggest and most well-known providers of marketing technology solutions in Denmark, but the best MarTech solution for a particular business will depend on its specific needs and requirements.