Arcane Office – Blockchain-based private online office suite.
Arcane Office is a decentralized office suite with high-security and zero-knowledge on your data. With Arcane Office, you have maximum control on your personal stuff. Full-featured online document and spreadsheet editor. Secure storage to save your photos. All free for personal use.
Another interesting service. Not one I’m particularly in the market for, but I’m glad it exists anyway.