AwesomeDataviz

Blazer

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

GitHubRubyGems
GitHub stars
4.8K
Commits, last 12 months
254
Contributors
48
Last commit

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.

Its GitHub description: Business intelligence made simple

GitHub topics: business-intelligencechartssql

Install

RubyGems
gem install blazer
v3.5.2

Development activity

Commits per month to the default branch over the last 12 complete months.

050100150 Oct 2025 Nov Dec Jan 2026 Feb Mar Apr May Jun Jul Aug Sep
050100150 Oct 2025 Jan 2026 Apr Jul
254 commits from Oct 2025 to Sep 2026.
Show data as a table
MonthCommits
Oct 20253
Nov 20251
Dec 20253
Jan 20261
Feb 20260
Mar 20261
Apr 20264
May 202675
Jun 2026150
Jul 202610
Aug 20262
Sep 20264

Popularity among Ruby charting libraries

Chartkick 6.5K YouPlot 4.9K Blazer 4.8K Gruff 1.4K
Chartkick 6.5K YouPlot 4.9K Blazer 4.8K Gruff 1.4K
GitHub stars for Blazer and the most-starred alternatives.
Show data as a table
ToolStars
Chartkick6,528
YouPlot4,857
Blazer4,802
Gruff1,398

Alternatives to Blazer

More comparisons: Blazer vs Chartkick · Blazer vs YouPlot · Blazer vs Gruff

Blazer FAQ

Is Blazer open source?

Yes. Blazer is released under the MIT license, and its source code is on GitHub.

Is Blazer still maintained?

Yes. Blazer is actively developed, with 254 commits in the last 12 months and the latest commit 9 days ago.

How do I install Blazer?

From RubyGems: gem install blazer.

What are the best alternatives to Blazer?

The most popular alternatives listed in Ruby charting libraries are Chartkick, YouPlot, and Gruff. See the full ranking.

What language is Blazer written in?

Blazer is primarily written in Ruby, according to GitHub.

Data: GitHub API, RubyGems. Updated Oct 4, 2026.