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