The Computer Systems Laboratory (CSL) conducts research and hands-on development in computer systems with emphasis on system-near software. CSL provides a strong blend of expertise in programming models and tool chains, runtime systems, operating systems, embedded systems, reconfigurable computing, high-performance systems, distributed systems, mobile and ubiquitous computing, and wireless sensor networks. CSL members have extensive experience in building systems that (really) work, have participated in many R&D projects in Greece, Europe and the US, and have successfully managed cutting-edge international research projects and challenging technical work-packages.