ALGOL 68RS is the second ALGOL 68 compiler written by I. F. Currie and J. D. Morrison, at the Royal Signals and Radar Establishment (RSRE).Unlike the earlier ALGOL 68-R, it was designed to be portable, and implemented the language of the Revised Report. Versions of ALGOL 68RS were written for the ICL 2900 Series, Multics, and VAX running VMS. Subsequently, parts of this compiler were released into the public domain, as a translator from ALGOL 68 to C, as part of the public release of the hardware description language ELLA, also by the RSRE.