Check out telegram. It surprisingly awesome in so many ways. Ultrafast native client on all platforms, very user friendly, time tested, stable, fully packed with features etc.
I love Telegram, but I want to state it clearly: the default chat scheme isn't end-to-end encrypted, which Keybase is. Therefore, it's not a drop-in replacement.
And also the more obvious difference: Telegram requires a telephone number, Keybase did not.
I don’t compare it to keybase. I compare it to WhatsApp and signal
The UX is better than WhatsApp and Signal but the security is worse. Facebook has your metadata but Telegram has everything
Same. Whatsapp and Signal chats are both E2E encrypted, Telegram is not.