Launchpad

An application was installed on Petronella Osgood's computer by 10 May 2020. Its logo was a light-grey circle with a white outline and the shape of a rocket ship with fire coming out of its base coloured grey in its centre. (WC: The Zygon Isolation)

Behind the scenes
While the application was not named in WC: The Zygon Isolation, the application was named "Launchpad" in the real world, and was an application launcher for macOS.