This looks great. I’m deploying JLab as the new front end to the HPC cluster I maintain and users like it.

Anyone know of good list of extensions like this?

Is there anything in JupyterLab like the clusters tab in the classic notebook? How are you using it as a front end to a cluster?

Ah no, we use Slurm. So JLab runs on a head node, and users submit jobs through Slurm. Slurm would let you set a ipcluster which you then drive from a JLab notebook, though, which is a nice set up.