I tried browsing the documentation for several minutes, but it does not answer this question: which Jupyter kernels are supported? Is it only Python like Google colab?
Because everything is running in a docker container behind the scenes we support any kernel you would like. We have a handful of pre-built containers and you can also add a custom container very easily or build one off of a base template such as the Jupyter R stack. Here is a list of some of the container we provide by default https://docs.paperspace.com/gradient/notebooks/notebook-cont...
