OpoLua brings Psion palmtop apps to the iPhone
(All About Windows Phone)

A brief history lesson. Today`s smartphones are built on the lessons learned from the early days, when Symbian ruled the world (2002-2010) - and Symbian itself, a multitasking OS in the palm of your hand, was based on EPOC, a real time pre-emptive multitasking OS in the AA-powered Psion palmtops in the 1990s. These had a full development language onboard, OPL, and a huge number of applications were developed by enthusiasts (like me) for the Psion scene. Fast forward to today and a developer has just released OpoLua, an OPL runtime for iOS, i.e. for iPhone and iPad. Meaning that you can now install and run Psion/OPL applications on a 2022 iPhone. Which is... pretty cool, even though app complexity now has in most cases outstripped those early OPL efforts.