CheerpJ is

The CheerpJ technology has been a true game-changer for PhET simulations. For years, as school technologies have shifted to Chromebooks and iPads, many teachers and students lost access to some of their favorite PhET simulations because these simulations were built on our legacy Java code. With CheerpJ, we were able to create new browser-compatible versions of 57 legacy Java simulations, restoring access at a time of great need. The PhET teacher community could not be happier!

We believe CheerpJ is the most turn-key Java conversion project on the market. For larger conversions, we really recommend the supplementary development services offered by Leaning Technologies. Their highly skilled development team were able to fix quickly any problem we threw their way.

Our partnership with Leaning Technologies is a major resource for Blackbird, accelerating the development of the Blackbird editor in JavaScript editor by many months. This innovation ensures Blackbird will continue to provide best-in-class efficiency in video production workflows for the foreseeable future.

The performance and size of the converted code have been always quite impressive, but in the last year, Cheerp has further dramatically improved the runtime speed, and drastically reduced the compiled size, allowing us to save on bandwidth and resources, as well as to extend our customer base. As a matter of fact, the performance is so good that […] we moved to a web-only application!