Protocol can mean different things, depending on the context:

Reference implementation of Anoma

• UpdatedFeb 19, 2026
• Elixir

Peer-to-peer hypermedia protocol

• UpdatedMay 1, 2025

An open source cybersecurity protocol for syncing decentralized graph data.

• UpdatedFeb 5, 2026
• JavaScript

⚡ KCP - A Fast and Reliable ARQ Protocol

• UpdatedApr 22, 2025
• C

A production-ready QUIC implementation in pure Go

• UpdatedFeb 16, 2026
• Go

🥧 Savoury implementation of the QUIC transport protocol and HTTP/3

• UpdatedFeb 20, 2026
• Rust

SimpleX - the first messaging network operating without user identifiers of any kind - 100% private by design! iOS, Android and desktop apps 📱!

• UpdatedFeb 20, 2026
• Haskell

Websockets in swift for iOS and OSX

• UpdatedMay 16, 2024
• Swift

Lightning Network Daemon ⚡️

• UpdatedFeb 20, 2026
• Go

A cross-platform protocol library to communicate with iOS devices

• UpdatedNov 28, 2025
• C

The LBRY SDK for building decentralized, censorship resistant, monetized digital content apps.

• UpdatedAug 19, 2024
• Python

An unobtrusive and user-friendly desktop application for IPFS on Windows, Mac and Linux.

• UpdatedFeb 17, 2026
• JavaScript

A bridge/proxy allowing you to connect to Minecraft: Java Edition servers with Minecraft: Bedrock Edition.

• UpdatedFeb 19, 2026
• Java

Go client for AMQP 0.9.1

• UpdatedSep 7, 2023
• Go

Async-friendly QUIC implementation in Rust

• UpdatedFeb 16, 2026
• Rust

Cross-platform, C implementation of the IETF QUIC protocol, exposed to C, C++, C# and Rust.

• UpdatedFeb 20, 2026
• C

Keepalived

• UpdatedNov 3, 2025
• C

Folding Tab Bar and Tab Bar Controller

• UpdatedJun 13, 2022
• Objective-C

Graph Node indexes data from blockchains such as Ethereum and serves it over GraphQL

• UpdatedFeb 20, 2026
• Rust

Our Guillotine Menu Transitioning Animation implemented in Swift reminds a bit of a notorious killing machine.

• UpdatedApr 13, 2020
• Swift