Open Source Data Visualization Tools
A dashboard is only as honest as the query behind it, and the real trap of hosted BI is that the per-seat, per-viewer pricing quietly decides who in the company is allowed to see the numbers at all. The open source tools here connect straight to the databases you already run and put the charts on a server you host, so a metric anyone needs isn't gated behind another paid seat - the data stays where it lives and the cost stops tracking how many people look.
Grafana
Open-source platform for monitoring and observability with dashboards, alerting, and mixed data sources
Apache Superset
Web-based business intelligence and data exploration platform with charts, dashboards, and SQL editing
Metabase
Open source analytics for asking questions, building dashboards, and embedding BI
Redash
Browser-based SQL analytics for querying, visualizing, scheduling, and sharing data
Evidence
Business intelligence as code for building interactive data visualizations from SQL and markdown
Lightdash
Open-source BI platform for dbt teams that defines metrics in dbt and shares charts and dashboards
Cacti
RRDtool front end that polls devices over SNMP and turns the data into graphs
TDuck
Privatizable survey and form system with drag and drop design, analysis, and webhook sync