Best Time Series Databases to Watch in 2019

Built by InfluxData in 2013, InfluxDB is a completely open-source time series database working on all current operating systems. TimescaleDB is directly tied with PostgresSQL as it scales the famous relational database to offer a unique set of time series related operations (such as fast ingest). Graphite is a even more established and very widely used time series database system.

Source: devconnected.com