Chartkick
Create beautiful JavaScript charts with one line of Ruby
...It provides a high-level API where developers can use simple helpers like line_chart, pie_chart, or column_chart and pass in data arrays or ActiveRecord queries. Under the hood, it works with popular charting libraries such as Google Charts, Chart.js, and Highcharts, but hides their verbose JavaScript APIs behind a clean Ruby interface. It also handles things like automatic labels, legends, colors, and responsiveness without requiring you to manually configure chart options. Because of its integration with ActiveRecord, developers can quickly visualize trends in their application’s data with minimal transformation. Chartkick is especially valued in dashboards, reporting tools, and admin panels where quick, maintainable visualization is needed without heavy front-end development.