# Blazer

> Business intelligence tool for Rails apps: explore data with SQL and build charts and dashboards.

- Category: [Ruby charting libraries](https://awesomedataviz.com/categories/ruby/)
- Repository: https://github.com/ankane/blazer
- License: MIT
- Language: Ruby
- Status: Active (commits in the last 90 days)
- GitHub stars: 4,802
- Commits in the last 12 months: 254
- Contributors: 48
- Last commit: Sep 25, 2026
- Install (RubyGems): `gem install blazer`
- Topics: Dashboards & BI

## Overview

Blazer is an open-source Ruby charting library released under the MIT license. Its GitHub repository has 4,802 stars, 501 forks, and 48 contributors. It is actively developed with 254 commits in the last 12 months.

## Alternatives

- [Chartkick](https://awesomedataviz.com/tools/chartkick/): Create charts with one line of Ruby. (6.5K stars)
- [YouPlot](https://awesomedataviz.com/tools/youplot/): Command-line tool that draws plots in the terminal from piped data. (4.9K stars)
- [Gruff](https://awesomedataviz.com/tools/gruff/): Graphing library for Ruby that renders charts as images using RMagick. (1.4K stars)

## Comparisons

- [Blazer vs Chartkick](https://awesomedataviz.com/compare/blazer-vs-chartkick/)
- [Blazer vs YouPlot](https://awesomedataviz.com/compare/blazer-vs-youplot/)
- [Blazer vs Gruff](https://awesomedataviz.com/compare/blazer-vs-gruff/)

Source: https://awesomedataviz.com/tools/blazer/ · Data updated 2026-10-04 · Content: CC BY 4.0, Awesome Dataviz (https://awesomedataviz.com).