Mozilla would like to see the JavaScript data science ecosystem move forward, but bringing a mature Python scientific stack to the browser will be useful in the meantime.

PyScript lets you run Python scripts right in the browser, side by side with JavaScript, with two-way interaction between your code and the web page.

Microsoft plans to enable the Python and Ruby languages to be used for client-side development of rich Internet applications that leverage the companyu2019s Silverlight browser plug-in technology.