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CryptPad
CryptPad is an end-to-end encrypted collaboration suite with real-time editors, file storage, and sharing, designed to keep document contents private from servers and admins.
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.
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