Sol2Sol3 (sol2 v3.0) - a C++ <-> Lua API wrapper with advanced features and top notch performance - is here, and it's great! Documentation:
Sol☀️ Sol° beautifully displays weather information so you can plan your day accordingly. Check the weather in your current location or any city around the world. Implemented in Objective-C.
Solana.SwiftThis is a open source library on pure swift for Solana protocol.
frameworkLightweight, open source and magic-free framework for testing solidity smart contracts.