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

RSAF is a code project with source, releases, documentation, or setup notes.

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

Yubikey Full Disk Encryption is an open source Linux, macOS, or Unix resource with code, tools, or setup notes.

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.

) - CLI agent runner - create AI agents that discover each other via Nostr (NIP-89, NIP-90, NIP-44 v2 encryption for targeted jobs), accept jobs, and get paid on-chain.

) - an Android based remote NostrConnect signer and web project using QR codes and Nip44 encryption by default

) - A Bitcoin wallet implementing MPC TSS over Nostr for decentralized device pairing and transaction signing. Connect devices from anywhere via Nostr relays with NIP-44 encryption

cryptgeon helps share or store files with encryption, access control, or privacy-focused transfer features.

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

EasyTransfer helps share or store files with encryption, access control, or privacy-focused transfer features.

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.

Go tool for managing Linux filesystem 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.

linshare helps share or store files with encryption, access control, or privacy-focused transfer features.

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

netshare helps share or store files with encryption, access control, or privacy-focused transfer features.

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.