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 more comprehensive decentralized framework that supports various applications including messaging, while Anomos is primarily focused on file sharing with an emphasis on blockchain integration. GNUnet offers greater complexity and a broader feature set, whereas Anomos provides a simpler user experience centered around secure file sharing.