This paper introduces InterCorp, a parallel corpus including texts in Czech and 27 other languages, available for online searches via a web interface. After discussing some issues and merits of a multilingual resource, it is argued that it has an important role especially for languages with fewer native speakers, supporting both comparative research and studies of the language from the perspective of other languages. The paper proceeds with an overview of the corpus - the strategy and criteria for including new texts, the representation of available languages and text types, linguistic annotation, and a sketch of pre-processing issues. Finally, it presents the search interface and suggest some research opportunities.