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FlatLaf

Introduction: FlatLaf - Swing Look and Feel (with Darcula/IntelliJ themes support)

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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 (LTS and latest).

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

FlatLaf Light

FlatLaf Dark

macOS Themes

FlatLaf macOS themes

IntelliJ Platform Themes

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

IntelliJ Platform Themes

Demo

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

Download

FlatLaf binaries are available on 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:

See also Native Libraries distribution for instructions on how to redistribute FlatLaf native libraries with your application.

Snapshots

FlatLaf snapshot binaries are available on Sonatype OSSRH. To access the latest snapshot, change the FlatLaf version in your dependencies to <version>-SNAPSHOT (e.g. 0.27-SNAPSHOT) and add the repository https://oss.sonatype.org/content/repositories/snapshots/ to your build (see Maven and Gradle docs).

Addons

IntelliJ Themes Pack - bundles many popular open-source 3rd party themes
Extras - SVG icon, tri-state check box, UI inspectors, and more
SwingX - support for SwingX components
JIDE Common Layer - support for JIDE Common Layer components
Fonts - some font families bundled in easy-to-use and redistributable JARs

Getting started

To use FlatLaf, add following code to your main method before you create any Swing component:

FlatLightLaf.setup();

// create UI here...

Documentation

For more information and documentation visit FlatLaf Home:

Theme Editor

The Theme Editor that supports editing FlatLaf theme properties files. See Theme Editor documentation for details and downloads.

Theme Editor

Buzz

Applications using FlatLaf

Featured

JFormDesigner (commercial) - Java/Swing GUI Designer (from the FlatLaf creators)
JProfiler (commercial) - the award-winning all-in-one Java profiler
install4j (commercial) - the powerful multi-platform Java installer builder
DbVisualizer (commercial) - the universal database tool for developers, analysts and DBAs
Apache NetBeans - IDE for Java, PHP, HTML and much more
Thermo-Calc (commercial) - Thermodynamics and Properties Software

Data

Ultorg (commercial) - a visual query system for relational databases
Jailer - database subsetting and relational data browsing tool
MagicPlot (commercial) - Software for nonlinear fitting, plotting and data analysis
Constellation - Data Visualization and Analytics (based on NetBeans platform)
Kafka Visualizer - Kafka GUI client

Security

ZAP - the world's most widely used web app scanner
Burp Suite Professional and Community Edition (commercial) - the leading software for web security testing
Ghidra - a software reverse engineering (SRE) framework
jadx - Dex to Java decompiler
BurpCustomizer - adds more FlatLaf themes to Burp Suite
Total Validator (commercial) - checks your website
JPass - password manager with strong encryption

Software Development

jclasslib bytecode viewer
KeyStore Explorer
muCommander - lightweight cross-platform file manager
Guiffy (commercial) - advanced cross-platform Diff/Merge
HashGarten - cross-platform Swing GUI for Jacksum
Pseudo Assembler IDE - IDE for Pseudo-Assembler
Linotte - French programming language created to learn programming
lsfusion platform - information systems development platform

Electrical

Antares - a free, powerful platform for designing, simulating and explaining digital circuits
Logisim-evolution - Digital logic design tool and simulator
Makelangelo Software - for plotters, especially the wall-hanging polargraph
GUIslice Builder - GUI builder for GUIslice, a lightweight GUI framework for embedded displays
ThunderFocus - Arduino-based telescope focuser
RemoteLight - multifunctional LED control software

Media

jAlbum (commercial) - creates photo album websites
MediathekView - search in media libraries of various German broadcasters
Cinecred - create beautiful film credit sequences
tinyMediaManager (commercial) - a media management tool
Weasis - medical DICOM viewer used in healthcare by hospitals, health networks, etc
Shutter Encoder (source code) - professional video converter and compression tool
Sound Analysis - analyze sound files in time or frequency domain
Novel-Grabber - download novels from any webnovel and lightnovel site
lectureStudio - digitize your lectures with ease

Modelling

Astah (commercial) - create UML, ER Diagram, Flowchart, Data Flow Diagram, Requirement Diagram, SysML diagrams and more
IGMAS+ - Interactive Gravity and Magnetic Application System

Documents

Big Faceless (BFO) PDF Viewer (commercial) - Swing PDF Viewer
PDF Studio (commercial) - create, review and edit PDF documents
XMLmind XML Editor (commercial)

Geo

JOSM - an extensible editor for OpenStreetMap (requires FlatLaf JOSM plugin)
Mapton (source code) - some kind of map application (based on NetBeans platform)
MeteoInfo - GIS and scientific computation environment for meteorological community

Business / Legal

j-lawyer - Kanzleisoftware
Jeyla Studio - Salon Software
Fanurio (commercial) - time tracking and billing for freelancers and teams
Jes - Die Java-EÜR
mendelson AS2, AS4 and OFTP2 (open-source) and mendelson AS2, AS4 and OFTP2 (commercial)

Messaging

Spark - cross-platform IM client optimized for businesses and organizations
Chatty - Twitch Chat Client

Gaming

BGBlitz (commercial) - professional Backgammon
MCreator - software used to make Minecraft Java Edition mods, Minecraft Bedrock Edition Add-Ons, and data packs without programming knowledge
MapTool - virtual Tabletop for playing role-playing games
MegaMek, MegaMekLab and MekHQ - a sci-fi tabletop BattleTech simulator suite handling battles, unit building, and campaigns
ControllerBuddy - advanced gamepad mapping software

Utilities

MooInfo - visual implementation of OSHI, to view information about the system and hardware
Linux Task Manager (LTM) - GUI for monitoring and managing various aspects of a Linux system
Rest Suite - Rest API testing
SpringRemote - remote Linux SSH connections manager
jEnTunnel - manage SSH Tunnels made easy
Android Tool - makes popular adb and fastboot commands easier to use