Quick link to a medium article outlining a number of different ways to run your own NPM server. Some self-hosted software, some SaaS solutions. The actual article has more context, but here are the links for (my) quick reference.
Running your Own NPM Serverastorm
Frustrated by Magento? Then you’ll love Commerce Bug, the must have debugging extension for anyone using Magento. Whether you’re just starting out or you’re a seasoned pro, Commerce Bug will save you and your team hours everyday. Grab a copy and start working with Magento instead of against it.
Updated for Magento 2! No Frills Magento Layout is the only Magento front end book you'll ever need. Get your copy today!
Quick dispatches from the life of a working programmer.