About Amber
Amber is a web application framework written in Crystal inspired by Kemal, Rails, Phoenix and other popular application frameworks.
How many people use Amber
GitHub · npm- #45

ThinkPHP2.8k
- #46
Mojolicious2.7k - #47
Fat-Free Framework2.7k
- #48
Amber2.6k
- #49
actionhero.js2.4k - #50
StimulusReflex2.3k
- #51

Web2py2.2k
#48 of 73 Web frameworks we have counts for (of 99) · bars are GitHub stars across these neighbours; the category leader is Next.js at 142k · as of September 7, 2026
Compare
#48 of 73 Web frameworks
#47 of 73 Web frameworks
Audit any site that runs Amber.
Enter a URL to score its stack for technology quality, version health, Lighthouse performance - and AI-readiness.
How we audit Amber
We measure the detected version against Amber's release history and grade the surrounding stack with a Lighthouse-grade quality audit. Weak or outdated links weigh more - one risky dependency can pull the whole score down.
How the score worksMore technologies in Web frameworks
View all →Technology definitions from a community-maintained catalogue, licensed GPL-3.0. Attribution and source.