SEO united is a German SEO resource portal connecting users with SEO agencies, offering tutorials, tools, and industry news for search engine optimization.

Agenturtipp.de is a comparison and matching platform for businesses in Germany to find and compare over 3,200 marketing and IT agencies based on reviews and services.

Suchmaschinen WISSEN is a German knowledge magazine focusing on SEO and SEA news, guides on search engine optimization, and digital marketing topics.