This book constitutes the strictly refereed post-workshop proceedings of the International Workshop on Internet Programming Languages held in Chicago, IL, USA in May 1998 during ICCL'98. The seven thoroughly revised full papers were carefully reviewed and selected from the workshop presentations for inclusion in this book. The book is devoted to all current aspects of computer languages for wide-area systems, including specification languages, programming languages, semantics, implementation technologies, and application experience. The papers document that the Internet has a deep revitalizing effect on the field of programming languages by challenging various fundamental assumptions and concepts.