Some projects from 50 Free and Open Source Projects Selected for NGI Zero grants that caught my attention for a variety of reasons:

• Reticulum Network Stack — Networking stack for building local and wide-area networks even with extremely low bandwidth
• librice — Pure Rust implementation of IETFs real-time communication standard ICE (RFC8445) Interactive Connectivity Establishment (ICE): A Protocol for Network Address Translator (NAT) Traversal for Offer/Answer Protocols
• Aiohttp Asynchronous HTTP Client/Server for asyncio and Python.
• WeasyPrint — Print rendering engine for HTML and CSS