Proton today announced the launch of Proton Sheets, its end-to-end encrypted spreadsheet web application designed to offer a privacy-focused alternative to Google Sheets and Microsoft Excel.

Unlike traditional spreadsheet tools, Proton Sheets encrypts all user data by default, including filenames and metadata. That means no one, not even Proton, can access the contents of users’ spreadsheets. The company says the new tool is a response to growing concerns about Big Tech’s data collection practices and…