The Q68 was first presented to the public in April 2014 and became available in autumn 2017. It is produced and marketed by Derek Stewart (of former D&D Systems). Hardware add-ons such as new developments like the QL-SD (designed by Peter Graf) and reengineered or even expanded 1990s designs such as QubIDE interfaces (by José Leandro Novellón). Trump, Gold & Super Gold Cards (by Tetroid) are still being produced for the original QL. RWAP Software supplies various hardware and software upgrades and spare parts. Operating systems Patched or reengineered versions of QDOS were produced, most notably Minerva which gradually evolved into a completely rewritten operating system, offering improved speed, with multitasking SuperBASIC interpreters. Tony Tebby went on to produce another updated operating system, SMSQ/E, which has continued to be developed for the Sinclair QL and emulators, offering many more features. Emulators, virtual QLs and distributions Quite a few emulators and virtual QLs became available over time of which Q-emuLator (Windows/Mac), QPC2 (Windows), SMSQmulator (Java), ZEsarUX (Windows/Mac/Linux) and sQLux (Windows/Mac/Linux) are actively maintained. Several distributions of emulators, applications and information have been produced, of which Black Phoenix and QL/E are the most actively maintained. See also Sinclair QL Software One Per Desk CST Thor Q40/Q60 List of Sinclair QL clones References External links Dilwyn Jones's QL pages – Well maintained site with comprehensive QL related information and a huge software download library. THE REPOSITORY of the Sinclair QL Preservation Project – Well maintained project with valuable Sinclair QL related information and software. Computer-related introductions in 1984 Home computers 68000-based home computers Computers designed in the United Kingdom Personal computers Sinclair QL