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OpenPGP mailboxes bundled with encrypted file storage

A local-first personal knowledge workspace for private notes, linked objects, and databases.

A free Markdown notebook that stores notes as ordinary files and offers optional encrypted sync.

A local-first Markdown note app with an optional self-hosted encrypted sync server.

Activist email with encrypted storage and recovery-code requirements

Copy and synchronize files between a local machine and configured cloud-storage remotes.

Manage several encrypted-folder backends from a desktop interface

A maintained Thunderbird fork with encrypted-message search

An open-source handwriting notebook with nested folders and encrypted cross-device sync.

Browse compatible encrypted filesystems inside Android

A handwriting notebook with on-device encryption and optional sync to storage you choose.

A private, open-source writing app built around searchable notes, pins, and trails.

Local Markdown notebooks with backlinks, search, and optional self-hosted encrypted sync.

Plan and share personal or professional events in an encrypted calendar across desktop and mobile apps.

End-to-end encrypted messaging, voice, video, and file sharing for organizations.

Keep encrypted workplace messaging on a self-hosted XMPP server.

AI-native Markdown notes with encrypted sync for developers

An embeddable persistent key-value store for applications that need fast local storage.

Configurable browser with blocking and encrypted sync

An Android vault with offline storage and encrypted backups

Encrypted IPv6 overlay with public-key-derived addressing

Keep a working folder and an encrypted folder in sync

Provision self-managed cloud VMs through a portal, CLI, API or Terraform, using predefined sizes and per-second billing.

A configurable proxy for encrypted DNS protocols