Sonique media player, Trillian messenger and NeoPlanet web browser. I was there, man. Before flat UI and sensible color schemes took hold. For a moment, it was pretty wild.

https://en.wikipedia.org/wiki/Trillian_(software)

https://en.wikipedia.org/wiki/NeoPlanet

https://en.wikipedia.org/wiki/Sonique_(media_player)