# Blazer vs Gruff

## Key differences

- Blazer has 3.4× as many GitHub stars as Gruff (4.8K vs 1.4K).
- Blazer had more development activity over the last 12 months: 254 commits vs 37.
- Both are released under the MIT license.
- Gruff is the older project: its repository was created in 2008, Blazer's in 2014.

| | Blazer | Gruff |
|---|---|---|
| Description | Business intelligence tool for Rails apps: explore data with SQL and build charts and dashboards. | Graphing library for Ruby that renders charts as images using RMagick. |
| GitHub stars | 4,802 | 1,398 |
| Commits (12 months) | 254 | 37 |
| Contributors | 48 | 43 |
| License | MIT | MIT |
| Language | Ruby | Ruby |
| Status | Active | Active |
| Install | `gem install blazer` | `gem install gruff` |

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