Prospero - Professional Business Proposals
Spike - Spike solves businesses' communication chaos by bringing together email, team chat, collaborative docs, and meetings, into one feed.
SuperOkay - Delightful briefs, proposals, and estimates
Keybase Chat - End-to-end encrypted chat built into Keybase
Bonsai Proposals - Automated & beautiful proposals for creative freelancers
Crypho - End-to-end-encrypted messaging and file sharing