sharp was active in the field of developing apl interpreters for the ibm pc and other computers. their ibm pc implementation was based on a software ibm system/370 emulator, written by roger moore, which ran the mainframe sharp apl executable on the pc. this product was only used by users exposed to mainframe sharp apl, never enjoying the commercial success of stsc's apl*plus/pc product. sharp also offered their apl interpreter for pc-xt/370 hardware, essentially an ibm pc/xt with ibm 370 hardware emulation cards, but the pc/370 hardware never caught on. later, sharp released the sax (sharp apl for unix) interpreter, based on stsc's apl*plus unx interpreter, which was a much more complete implementation of iverson's apl extensions. as of 2016, sax is available from soliton incorporated.