JFormDesigner/FlatLaf
FlatLaf - Swing Look and Feel (with Darcula/IntelliJ themes support) observed · 2026-08-28
Health v2 · maintenance only
88/100
- Activity 99
- Release rhythm 68
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-02. Adoption (stars, forks) is never an input.
- gap_med: 90.5
- age_days: 2571
- days_rel: 55
- days_push: 8
- n_releases_24m: 9
Adoption not part of the score
4262 stars · 329 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
FlatLaf is a modern, open-source, cross-platform Look and Feel library for Java Swing desktop applications with a clean, flat design. It ships Light, Dark, IntelliJ, and Darcula themes, supports IntelliJ Platform third-party themes, HiDPI scaling, and runs on Java 8 or newer.
Use cases
- give my Java Swing app a modern flat dark theme
- make a Swing UI look like IntelliJ IDEA Darcula
- use IntelliJ Platform themes in a desktop Java application
- fix blurry Swing UI on HiDPI displays
- add macOS-style light and dark themes to a Java desktop app
- customize fonts and colors of a Swing look and feel
When to choose
- building or modernizing a Java Swing desktop application
- you want IntelliJ/Darcula-like appearance in Swing
- you need HiDPI scaling and cross-platform consistency on Java 8+
When to avoid
- building JavaFX, web, or non-Java applications
- you need a native OS widget look rather than a flat custom theme
Facets
library · maturity stable
ui-components theme desktop-applications cross-platform web-design cross-platform jvm windows swing look-and-feel java flat-design darcula intellij-themes hidpi desktop macos linux
2 sources
- readme: https://github.com/JFormDesigner/FlatLaf · fetched 2026-08-28 · 613ff95d4d91
- homepage: https://www.formdev.com/flatlaf/ · fetched 2026-08-29 · b596629c63bc
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| JFormDesigner/FlatLaf | main | 88 |
For agents
markdown · JSON · MCP: product_card(name="JFormDesigner/FlatLaf")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem