# Cal-Heatmap

> Time-series calendar heatmaps, similar to GitHub's contribution graph, built on D3.

- Category: [JavaScript charting libraries](https://awesomedataviz.com/categories/javascript-charting-libraries/)
- Website: http://cal-heatmap.com
- Repository: https://github.com/wa0x6e/cal-heatmap
- License: MIT
- Language: TypeScript
- Status: Inactive (no commits in over a year)
- GitHub stars: 3,128
- Commits in the last 12 months: 0
- Contributors: 22
- Last commit: Mar 3, 2024
- Latest release: 4.2.4 (Dec 29, 2023)
- Install (npm): `npm install cal-heatmap`, 19.1K downloads per week
- Topics: Time series & real-time charts

## Overview

Cal-Heatmap is an open-source JavaScript charting library released under the MIT license. Its GitHub repository has 3,128 stars, 305 forks, and 22 contributors. It has not had a commit since Mar 3, 2024. The latest release, 4.2.4, was published on Dec 29, 2023. On npm it is downloaded about 19.1K times per week.

## Alternatives

- [Chart.js](https://awesomedataviz.com/tools/chart-js/): Charts with the canvas tag. (67.7K stars)
- [Apache ECharts](https://awesomedataviz.com/tools/echarts/): Highly customizable and interactive charts ready for big datasets. (67.5K stars)
- [Plotly.js](https://awesomedataviz.com/tools/plotly-js/): Powerful declarative library with support for 20 chart types. (18.4K stars)
- [ApexCharts](https://awesomedataviz.com/tools/apexcharts/): Modern & Interactive SVG Charts. (15.2K stars)
- [Frappe Charts](https://awesomedataviz.com/tools/frappe-charts/): Simple, responsive SVG charts with zero dependencies. (15.1K stars)
- [Chartist.js](https://awesomedataviz.com/tools/chartist-js/): Responsive charts with great browser compatibility. (13.4K stars)

Source: https://awesomedataviz.com/tools/cal-heatmap/ · Data updated 2026-10-05 · Content: CC BY 4.0, Awesome Dataviz (https://awesomedataviz.com).