luckyframework/lucky
A full-featured Crystal web framework that catches bugs for you, runs incredibly fast, and helps you write code that lasts. observed · 2026-08-28
Health v2 · maintenance only
80/100
- Activity 97
- Release rhythm 48
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: 267.5
- age_days: 3526
- days_rel: 132
- days_push: 20
- n_releases_24m: 3
Adoption not part of the score
2724 stars · 173 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
Lucky is a full-featured web framework written in Crystal that emphasizes catching bugs at compile time through its type system. It includes batteries like authentication, an ORM, routing, and asset management, while delivering very fast, low-memory performance.
Use cases
- build a fast JSON API in Crystal
- create a full-stack web application with authentication
- migrate from Rails to a faster compiled framework
- build web apps that catch bugs at compile time
- generate CRUD actions and models quickly
- build a low-memory high-throughput web service
When to choose
- you want Rails-like productivity with compiled-language performance
- you prefer compile-time error checking over runtime bugs
- you're building APIs or web apps in Crystal
- you want authentication, ORM, and routing included out of the box
When to avoid
- your team doesn't know Crystal and can't invest in learning it
- you need a huge ecosystem of third-party libraries and gems
- you rely on dynamic metaprogramming-heavy patterns
- you need to hire from a large pool of framework-experienced developers
Facets
framework · maturity active
web-framework routing orm auth templating http-server web-development backend apis windows cross-platform crystal full-stack compile-time-safety -api mvc linux macos
3 sources
- readme: https://github.com/luckyframework/lucky · fetched 2026-08-28 · d7bd0ffbc695
- homepage: https://luckyframework.org · fetched 2026-08-29 · 2c086cb2b604
- site_page: https://luckyframework.org/guides/getting-started/installing · fetched 2026-08-29 · bd0c4a93d415
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| luckyframework/lucky | main | 80 |
For agents
markdown · JSON · MCP: product_card(name="luckyframework/lucky")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem