BaSalt - Blockchain based documents managing/sharing platform
Papermind - Papermind Slack App is a collaborative article-editing and document management platform for Slack
Cryptominded - Where you learn more about cryptocurrencies
Quip: Team Documents for Slack - Create, share and get notified about Quip docs in Slack
CoinDesk - Leader in blockchain news.
Workflowy - A better way to organize your mind.