Dashboards
Tools open source to build a dashboard with multiple charts, filters, and connected data (great for monitoring and analysis.
Apache Superset open-source platform for data exploration and dashboards (SQL IDE + charts).
Grafana is a free software, which allows the visualisation and formatting of metric data. It allows the creation of dashboards and graphs from multiple sources, including time series databases.
Graphite Graphite is a free open source software tool that monitors and graphs numerical time series data.