This chapter discusses the Jupyter Collaboration Extension for JupyterLab and the new features in JupyterLab 4 and Jupyter 7 releases. It covers the installation process of the Jupyter Collaboration Extension, the advantages of having collaboration code in separate packages, and the new features such as cell toolbars and running kernels in the side panel. It also explores Jupyter Lite, Jupyter desktop app, and their impact on accessibility and scalability of Jupyter.