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Browser tool for testing RSA encryption, decryption, key values, and prime-number calculations.

OpenPGP Email Encryption is a privacy tool for blocking ads, trackers, popups, proxies, or unwanted web behavior.

Public PGP key server for searching and retrieving encryption keys by email, name, or key ID.

OpenPGP key directory for finding, verifying, and sharing public encryption keys by email address.

File vault and cloud storage with end-to-end encryption and a zero-knowledge design for syncing private files across supported devices.

Browser-based tool for encoding, decoding, hashing, encryption, data conversion, and cyber analysis workflows.

Open infrastructure for AI agents to discover, hire, and pay each other - no platform, no middleman. NIP-89 discovery, NIP-90 job marketplace, NIP-44 v2 encryption for targeted jobs, on-chain payments

Encrypted pastebin for sharing text snippets securely with client-side encryption.

Cloud storage suite offering client-side encrypted file storage, sharing, and cross-platform apps, with publicly available source code.

Open-source, client-side encrypted safe boxes inside Koofr cloud storage, with web, mobile, and rclone access.

Belgian email service with browser-based OpenPGP encryption, digital signatures, aliases, custom domains, calendars, and documents.

Collection of browser tools for hashing, encoding, encryption, conversion, and text utilities.

Open-source storage, sharing, and sync with end-to-end encryption, protected metadata, hosted accounts, and self-hosting support.

Independent, ad-free email, calendar, and address-book service based in Germany, with privacy-focused account and encryption options.