PCjs uses JavaScript to recreate the IBM PC experience, using original ROMs, CPUs running at their original speeds, and early IBM video cards and monitors, including the classic green monochrome MDA monitor and the venerable “flickery” CGA monitor.

Over time, PCjs emulations have expanded to include selected PC Compatibles and more classic machines, such as Minicomputers, Programmable Calculators, Terminals, and Arcade Games. To learn more, visit the PCjs open-source project on GitHub.