This qooxdoo application lets you browse the available packages.
http://www.qooxdoo.org/qxl.packagebrowser/
git clone https://github.com/qooxdoo/qxl.packagebrowser.git
cd qxl.packagebrowser
npm install --no-save --no-package-lock @qooxdoo/framework
npx qx serve
Then open http://localhost:8080.