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node-oauth2-server
Complete, compliant and well tested module for implementing an OAuth2 Server/Provider with express in node.js
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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
you could take a look at https://github.com/oauthjs/node-oauth2-server (you have to do stuff yourself anyways)
after some more intensive search i found https://www.keycloak.org/ which may fit
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