Wer kann was is an independently maintained online directory that helps users find providers, services, products, and relevant websites. Described as a mirror of Curlie. org and DMOZ.

org, the site supplements directory data with editorially managed entries. Its goal is to give people a useful starting point when researching a purchase or choosing a service provider, particularly for decisions that require careful consideration. The directory organizes information across a broad range of subjects, including health, law, business, technology, travel, culture, sport, education, home, and leisure.

Featured categories include lawyers, dentists, display and visual merchandising services, and auditors, with listings intended to help users explore providers in their area or field. Wer kann was says it brings together information such as prices, customer satisfaction, and service quality to support comparisons and decision-making. Users can browse by topic or region, including German states and international areas.

The site also offers a blog and invites guest contributions, extending its directory with additional editorial content