[madeofpalk]

Sinopia was used at a previous job https://github.com/rlidwka/sinopia

[jasonjayr]

Just to save other users some time, it seems like sinopia is no longer maintained, and doesn't work on Node 8

https://github.com/rlidwka/sinopia/issues/456

Verdaccio, mentioned in a sibling comment seems to be the recommended replacement ...

https://github.com/verdaccio/verdaccio