-
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.
I can't confirm this as OnePlus is not mentioning anything about their software on the Product page but I guess it is just a fork of either LiteOS (https://github.com/LiteOS/LiteOS) or the "better" version HarmonyOS which relies on LiteOS.
NOTE:
The number of mentions on this list indicates mentions on common posts plus user suggested alternatives.
Hence, a higher number means a more popular project.