Mozilla (Suite) was similar to Netscape Commumicator and included browser, mail, webpage editor and maybe other functions as well. I don’t recall you could install the components separately. Later they decided to release a standalone browser (Phoenix/Firebird/Firefox) and then mail client (Thunderbird). IIRC they had standalone calendar (Sunbird) and webpage editor as well. Eventually they discontinued Mozilla and the closet thing would be the community-maintained Seamonkey.

Does the pen work probably in drawing or journal software (like Krita and Xournal++)?

I heard from somewhere that you can get the whole collection down to below 120GB if you compress all variants of a game into solid archive.