One of the first research publications mentioning the term "collaborative design" is Jones (1983). Computing is seen as a crucial technology to support collaboration, and Jones also notes that it will be hard to actually achieve collaboration. The latter is supported by Kvan's (2000) seminal paper. For this purpose we reviewed 324 papers on collaborative design, taken from various sources (conferences, journals, and PhD-theses). We grouped the papers based on common themes, and in that way derived a classification of themes through the last 25 years (1983-2008). The methodology, classification, and description of the themes are presented in the paper.