WebLaf is a Java Swing Look and Feel and extended components library for cross-platform applications.

Main advantages of WebLaF library:

1. Simple and stylish cross-platform default theme
2. Lots of additional custom Swing components
3. UIs and components easily stylable through painters
4. Settings, language, hotkey, tooltip and other custom managers
5. Various Swing and Java utilities for specific cases
6. Both LTR and RTL component orientations supported

You can find more information about the library on official site:
http://weblookandfeel.com

You can always find all WebLaF artifacts in the "releases" section:
https://github.com/mgarin/weblaf/releases

Here are the direct links for the latest release:

1. weblaf-1.23.jar - library jar
2. weblaf-simple-1.23.jar - library jar without dependencies
3. weblaf-src-1.23.zip - project sources zip
4. weblaf-demo-1.23.jar - executable demo jar
5. weblaf-javadoc-1.23.zip - JavaDoc zip
6. ninepatch-editor-1.23.jar - executable 9-patch editor jar

You can always check what fixes, features and improvements are coming by checking the milestones page:
https://github.com/mgarin/weblaf/issues/milestones

To build various WebLaF artifacts you will need Java 1.6 (update 30 or later) or Java 1.7 and [Apache ANT] (http://ant.apache.org/).
Simply run ant command within the "build" library folder to build all artifacts at once.

Here is a full list of usable ANT targets in WebLaF build script:

1. build.artifacts - default target, build all artifacts at once
2. build.weblaf.jar -> weblaf-x.xx.jar - build WebLaF binary
3. build.weblaf.simple.jar -> weblaf-simple-x.xx.jar - build WebLaF binary without dependencies
4. build.sources.zip -> weblaf-src-x.xx.zip - build WebLaF sources zip archive
5. build.npe.jar -> ninepatch-editor-x.xx.jar - build 9-patch editor application
6. build.weblaf.demo.jar -> weblaf-demo-x.xx.jar - build WebLaF demo application
7. build.javadoc -> weblaf-javadoc-x.xx.zip & javadoc - create zipped and unzipped library JavaDoc
8. run.npe -> build and run ninepatch-editor-x.xx.jar - 9-patch editor application
9. run.weblaf -> build and run weblaf-x.xx.jar - library information dialog
10. run.weblaf.demo -> build and run weblaf-demo-x.xx.jar - demo application

To install WebLaF you can simply call install() or use one of standard Swing L&F set methods:

public class WebLafUsage
{
    public static void main ( String[] args )
    {
        // You should work with UI (including installing L&F) inside EDT
        SwingUtilities.invokeLater ( new Runnable ()
        {
            public void run ()
            {
                // Install WebLaF as application L&F
                WebLookAndFeel.install ();

                // You can also do that using standard Swing methods:
                // UIManager.setLookAndFeel ( new WebLookAndFeel () );
                // UIManager.setLookAndFeel ( "com.alee.laf.WebLookAndFeel" );
                // UIManager.setLookAndFeel ( WebLookAndFeel.class.getCanonicalName () );

                // Create you Swing application here
                // JFrame frame = ...
            }
        } );
    }
}

I would really appreciate if you will post any found bugs in issues section here, on GitHub.
You can also post them on the library official site forum, but that would require registration.
And, as always, you can send any feedback directly to my email: mgarin@alee.com