These are the proceedings of the 8th International Workshop on Multi Agent Systems Technologies (MATES 2010), held during 27 29 September in Leipzig, collocated with the 40th Annual Conference of the Gesellschaft fur Informatik e.V. (GI). The main aim of the MATES conference series consists in bringing together researchers from around the world and providing a fruitful discussion basis for exchanging ideas and sharing the latest scienti?c results. Since its inception in 2003, MATES hasbeen collocatedwith mainstreamsoftwareengineering conf- ences like the NetObjectDays as well as with the...