This book constitutes the thoroughly refereed post-proceedings of the 10th International Workshop on Software Measurement, IWSM 2000, held in Berlin, Germany in October 2000. The 10 revised full papers presented were carefully reviewed and selected for inclusion in the book. The papers are organized in topical sections on object-oriented software measurement, software process improvement, function-point-based software measurement, software measurement of special aspects, improving the software measurement process.