Keybase

Keybase is a secure communication and file-sharing platform designed to protect conversations and data with end-to-end encryption. It combines chat, file storage, and identity verification to help individuals, teams, and organizations communicate safely across devices. Available on macOS, Windows, Linux, iOS, and Android, Keybase ensures that users can access encrypted content consistently and reliably wherever they work.

Keybase’s core functionality centers on public-key cryptography, making it possible to verify identities through social media accounts, domain ownership, and PGP keys without relying on a central authority. Its chat system supports encrypted one-to-one and group messaging, as well as team channels for organizations, with features like message history and file attachments protected in transit and at rest. Encrypted file storage allows users to create private, shared, and public folders that are transparently synced across devices, enabling secure collaboration on documents and media. Keybase also supports encrypted Git repositories, enabling developers to manage code with cryptographic assurance of integrity and confidentiality.