InfluxDB is an open source time series platform. This includes APIs for storing and querying data, processing it in the background for ETL or monitoring and alerting purposes, user dashboards, and visualizing and exploring the data and more. The master branch on this repo now represents InfluxDB 2.0, which includes functionality for Kapacitor (background processing) and Chronograf (the UI). If you are looking for the 1.x line of releases, there are branches for each of those. InfluxDB 1.8 will be the next (and likely last) release in the 1.x line and the working branch is here.