Man i don't know how to add things in your page, but i have two suggestions of office software: Simplenote 'n Qwonnotes, both are note taking and markdown apps that can be syncronize to a cloud, the first one you just need to create a account and it is cross platform, the second one you need a nextcloud or owncloud account but it is more feature rich.
You should also put LibreOffice and OnlyOffice there, elisa the music player from KDE, spotifyd. Linux has tons of software for all things you need.