InfluxDB

High-performance, scalable time-series database designed for Industrial IoT (IIoT) scenarios

Time series queried in SQL, with one table per device grouped under supertables.

A time-series database for high-performance real-time analytics packaged as a Postgres extension

Time series as a PostgreSQL extension, queried with plain SQL.

QuestDB is a high performance, open-source, time-series database

Ingests the InfluxDB line protocol and is queried with SQL.

The open-source observability database. One columnar engine for metrics, logs, and traces, on object storage.

Accepts InfluxDB line protocol, queried with SQL or PromQL.

VictoriaMetrics: fast, cost-effective monitoring solution and time series database

Accepts the InfluxDB line protocol for writes, but is queried with MetricsQL.

CNCF sandbox project, an open source distributed time-series database with high concurrency, high performance, and high scalability

Accepts InfluxDB line protocol writes and InfluxQL queries, and clusters in the open source version.

Other tools in Time-series databases