Rtnl Mchns s n ntrprs fndd by Pl Lvy nd Mk Dvln n 1981 t prvd tls t xpnd th s f mdrn sftwr ngnrng prctcs, prtclrly xplct mdlr rchtctr nd trtv dvlpmnt. t chngd ts nm n 1994 t Rtnl Sftwr, nd ws sld fr S$2.1 blln (qvlnt t crrnt S$3.59 blln) t BM n Fbrry 21, 2003.