The ZX Play project was inspired by the JSSpeccy3 emulator for the Sinclair ZX Spectrum that runs entirely within the web browser. This project is developed under the terms of the GPL open source license. It has become a derivative work of the emulator project, extending it to provide a way to enter programs into the web application which are then compiled and run on the emulator via tape images.
The intention of this project is to create a place where people can develop and share programs for the emulator, which can also be downloaded and run on the original hardware.
Read more about this project here.