COSCI another source of Easy JavaScript similar idea platform for simulations

https://cosci.tw/run/?name=ZTSa261473747827063#loadfiles
Co-Sci is a free learning platform developed to provide both interactive simulations and learning activities for scientists, teachers and students. Scientists and teachers can design simulations and mini games and incorporate them to collaborative activities to facilitate student’s learning. Students can understand physical concepts better through engaging in simulations and activities supported across platform like desktops, laptops, and mobile devices.