Zasper - The JupyterLab Alternative

 Zasper is a supercharged IDE written in Go that allows you to run data science workloads locally and efficiently.

Zasper started out as a front-end interface to JupyterLab like many others, but ended up as a ground up implementation of the Jupyter project.

It is written in Go and implements the Jupyter wire protocol to talk to the underlying IPython notebook kernels via zeromq sockets. 

https://www.i-programmer.info/news/90-tools/17778-zasper-the-jupyterlab-alternative-.html