CryptPad

CryptPad is an end-to-end encrypted online office suite offering collaborative document creation and editing. It provides functionalities similar to other office suites, including text documents, spreadsheets, presentations, and code editors, all while prioritizing user privacy. Unique features include its zero-knowledge architecture, preventing the server from accessing user data, and its open-source nature, allowing for independent audits and community contributions. This makes it suitable for individuals and teams seeking secure and private online collaboration, especially those prioritizing data confidentiality.