I’ve kind of fallen in love with the security app called Keybase, it provides a combination of secure identity verification, chat, file storage, and group file access. One of the things I was having trouble deciding is how to manage files (such as RP Books or other such things) in a secure way since Google has been known to get a bit pissy if people are sharing copyrighted material.
As such, I have created my own keybase account and a team on keybase under our name moltenaether, once installed the team can be joined via the app (which is free). While Discord is plenty secure for any of our chat needs, this would provide also a reasonable backup for if Discord goes down or some such. Mostly, I’m interested in the secure file storage and sharing options within the team.
Most of all, it is all free.