EventIndex is an open search engine designed to help people discover events from around the world. Visitors can search by city, topic, or date, including natural-language queries such as “tomorrow,” “weekend,” or “next week,” and explore nearby events on a map. The site organizes listings across categories including music, sports, theatre, markets, family activities, and festivals, making it easier to find options that match different interests and plans.

EventIndex also enables organizers to share events at no cost and without registration. Users can submit an event directly or photograph a poster, while an API and dedicated solutions are available for clubs, bands, restaurants, and other target groups. The service emphasizes an open, privacy-conscious approach: it states that it uses no tracking and no cookies. Its listed data is offered under CC0 or CC-BY licensing, and the site notes that its category background images are AI-generated. EventIndex is associated with IT services provider Ralf Völzke.