I've removed the ones I don't use.

Web Browser: Chrome

Email Client: Evolution

Terminal: gnome-terminal

IDE: VSCode

File manager: Nautilus

Basic Text Editor: Gedit

IRC/Messaging Client: HexChat

PDF Reader: Evince

Office Suite: LibreOffice

Video Player: mpv

Music Player: GTK3 frontend of Audacious

Photo Viewer: eog