csoundqt(1) on Linux
The text b6890d9bd2a6, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie) shipped it. The page shows this text now.
GUI interface and IDE for the csound synthesis system