Extjs custom extensions

Every time I look for information on the extjs network, I find something new and interesting that I can easily integrate into a project on extjs.
Today is a special day, since I did not find a tool, but a whole repository of user extensions. He appeared back in 2008 *. Maybe I noticed it before, but apparently he did not yet possess such an abundance of extensions, which can be observed now.

In order for everyone to be in the know, I’ll give a list of places where user extensions that you may find useful can potentially hide.

The list of extensions on the official website - here you can find a list of extensions and color schemes **. Additions for version 2.0, as a rule, also work in later versions (as opposed to color schemes). Some extensions are included in the official release.
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Saki's Extensions and Plugins - directory of extensions from Saki. It is very convenient to explore its contents allows the page with examples , where you can find new color schemes.

Extjs Forum - on the forum you can find not only help on using extensions from the official list, but also find some other successful solutions.

user extension repository is my recent find. Now there are somehow buggy examples viewed in the new version of the documentation. To view the examples, click on the class name, go to the source code view and find a link to the demo there.

Notes:
* Central ux repository - repository theme. Here you can read the discussion of the authors of the collections of extensions.
** Color schemes for version 3.0 are not presented on the official website. They can be found here . It is also worth noting that writing color schemes for version <3.0 is much easier than for earlier versions, since the style files are divided into two groups: structural and visual.