Text processor looks simple - just a window for text input, but it is actually a proper word processor, with formatting and such hidden behind the right mouse button click.
Drawing application has an external movable window with a tool palette. It seems to be vector editor, but the OS supports common image formats (GIF, JPEG and probably more).
There's some sort of email client, but email session is a "document". There's a web browser (I'll show it to you soon), and a spreadsheet tool with yet another multi-window interface. Note how trying to copy something from a spreadsheet asks for the clipboard format - plain text, CSV, image or "precise".
There is also some sort of cardfile application, and there seems to be an ability to create SCRIPTs, but it will be impossible to figure out without reading the documentation, so maybe some other time.
@nina_kali_nina oh it uses maru instead of checkmark for confirmation. makes sense