-
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.
Fons Adriaensen's zita-at1 is supposed to have really good quality pitch correction, maybe worth a look? Here's Robin Gareus's fork on github for easy browsing. It's GPL though so I don't think you can copy-paste it into an MIT licensed project.
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.