GNUnet is a free software framework for decentralized, peer-to-peer networking and an official GNU package. Developed by Christian Grothoff
License: Open Source
GNUnet is a decentralized network focused on privacy and anonymity, making it suitable for users who prioritize security. In contrast, Tunngle offers a more user-friendly experience with quicker setup, but lacks the privacy features of GNUnet and relies on a centralized infrastructure.