AddWiki is a German-language online reference and information portal featuring more than 105,000 contributions across a wide range of subjects. Its content is organized into categories including health, nutrition, education, technology, family, fitness, travel, nature, sport, beauty, and everyday life. Readers can explore practical guides, explainers, recipes, wellness topics, and answers to general questions. Recent articles cover subjects such as vitamin D, digestive health, appliances, consumer products, and food trends, alongside broader educational and lifestyle information.

The site also includes shopping-related content, with articles discussing products such as laptops, drink bottles, pet cameras, and household appliances. AddWiki presents its materials for informational purposes; its health content is not a substitute for medical advice or treatment, and the site recommends consulting a doctor when symptoms persist. The portal invites visitors to support it through donations and provides information about privacy and cookies. With its broad selection of topics and regularly featured articles, AddWiki aims to make varied German-language reference content accessible to readers seeking useful information for daily life.