Gnome Extensions:

• Rounded Window Corners Reborn
  Gnome Extension | GitHub
  Add rounded corners to all windows. Fork of the now unmaintained Rounded Window Corners extension.

• Panel corners
  Gnome Extension | GitHub
  A GNOME shell extension to keep the old topbar corners, which were removed for GNOME 42. It also allows you to customize the rounded corners, even if you use GNOME 40 or 41.

• Panel Workspace Scroll
  Gnome Extension | GitHub
  Switch workspace by mouse scroll on the panel. In contrast to alternative extensions purpose of this one is to use the native scroll handler of gnome-shell, so workspace scroll should behave exactly the same as overview scroll or workspace indicator scroll.

• Gnome 4x UI Improvements
  Gnome Extension | GitHub
  Tunes gnome 4x Overview UI to make it more usable.

• ddterm
  Gnome Extension | GitHub
  Another drop down terminal extension for GNOME Shell. With tabs. Works on Wayland natively.

• Disable Workspace Switch Animation for GNOME 40+
  Gnome Extension | GitHub
  Disables the workspace switch animation while preserving all other animations - instantly switch between workspaces with keyboard shortcuts.

• Tiling Shell
  Gnome Extension | GitHub
  Extend Gnome Shell with advanced tiling window management. Supports multiple monitors, Windows 11 Snap Assistant, Fancy Zones, customised tiling layouts and more.