Ableton Live 9 Standard

Ableton Live 9 Standard was installed on Petronella Osgood's computer by 10 May 2020. Its logo was a blue square with the word "Live" written in white in its centre. (WC: The Zygon Isolation)

Behind the scenes
Although not specified in WC: The Zygon Isolation, Ableton Live was was a digital audio workstation. Unlike other applications seen here, Ableton Live was named in-universe, as Petronella Osgood briefly hovers her mouse pointer over the app.