Keybase is a key directory that maps social media identities to encryption keys in a publicly auditable manner. For keeping everyone's chats and files safe, from families to communities to companies
Pretty good for secret sharing, I also use it for work. I want to suggest a feature for them to add a client-less way to share/upload secrets. Sometimes users need to get a file from others where they don't necessarily use a key base, in that case, it might be useful.