FlatLaf is a modern open-source cross-platform Look and Feel for Java Swing desktop applications.

It looks almost flat (no shadows or gradients), clean, simple and elegant. FlatLaf comes with Light, Dark, IntelliJ and Darcula themes, scales on HiDPI displays and runs on Java 8 or newer.

The look is heavily inspired by Darcula and IntelliJ themes from IntelliJ IDEA 2019.2+ and uses almost the same colors and icons.

FlatLaf can use 3rd party themes created for IntelliJ Platform (see IntelliJ Themes Pack):

Run demo with java -jar flatlaf-demo-<version>.jar (or double-click it). Requires Java 8 or newer.

FlatLaf binaries are available on JCenter and Maven Central.

If you use Maven or Gradle, add a dependency with following coordinates to your build script:

groupId:     com.formdev
artifactId:  flatlaf
version:     (see button below)

Otherwise download flatlaf-<version>.jar here:

FlatLaf snapshot binaries are available in JFrog Artifactory. To access the latest snapshot, change the FlatLaf version(s) in the dependencies to <version>-SNAPSHOT (e.g. 0.27-SNAPSHOT) and add the repository https://oss.jfrog.org/artifactory/oss-snapshot-local to your build (see Maven and Gradle docs).

• IntelliJ Themes Pack
• Extras
• SwingX
• JIDE Common Layer

• NetBeans 11.3
• jclasslib bytecode viewer 5.5
• KeyStore Explorer 5.4.3
• OWASP Zed Attack Proxy (ZAP) (in weekly releases)
• jAlbum 21 (commercial)
• XMLmind XML Editor 9.3 (commercial)
• Total Validator 15 (commercial)
• j-lawyer
• MegaMek v0.47.4 and MekHQ v0.47.5
• GUIslice Builder 0.13.b024
• Rest Suite
• ControllerBuddy
• SpringRemote
• mendelson AS2, AS4 and OFTP2 (open-source) and mendelson AS2, AS4 and OFTP2 (commercial)
• MeteoInfo 2.2
• lsfusion platform
• Jes - Die Java-EÜR
• Mapton 2.0 (source code) based on NetBeans platform
• Pseudo Assembler IDE
• Sound Analysis
• RemoteLight - Multifunctional LED Control Software
• and more...

• What others say about FlatLaf on Twitter
• FlatLaf announcement on Reddit

For more information and documentation visit FlatLaf Home