CryptPad

CryptPad is a web-based collaboration suite that provides real-time editors and a drive-like workspace with end-to-end encryption. Documents are encrypted in the browser before being stored or shared, reducing server-side access to content.

Key Features

• End-to-end encrypted editors for collaborative work in real time
• Multiple app types, including rich text, code, spreadsheets, presentations, forms, kanban, and whiteboards
• CryptDrive-style file organization with folders and shared documents
• Link-based sharing to collaborate without requiring recipients to create an account
• Designed to minimize sensitive data exposure to operators (zero-knowledge-style content storage)

Use Cases

• Privacy-focused alternative to cloud office suites for teams, schools, and organizations
• Secure collaboration on meeting notes, project planning boards, and shared spreadsheets
• Sharing files and documents via links without exposing personal identifiers

Limitations and Considerations

• While content is encrypted, clients must still trust the server to deliver honest application code (risk of active attacks)
• Security depends on instance configuration and keeping deployments up to date

CryptPad combines familiar collaboration workflows with strong privacy properties, making it well-suited for groups that need real-time editing without giving a provider access to document contents. It can be used as a full collaboration workspace for documents, boards, and shared files.