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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.
qrencode (https://github.com/fukuchi/libqrencode) can create text based output of qr codes in ANSI, ASCII and a UTF8 formats, you can pipe the output through sed to change the output.
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.