1. Alon, a Remix-like IDE for Solana using C/C++ code.

Links: - Tool [https://lithdew.github.io/alon/] - Announcement post [https://devpost.com/software/alon]

2. Solang Compiler, allows for "Write in Solidity and compile for Solana, eWASM and Parity Substrate".

Links: - Solang Compiler [https://solang.readthedocs.io/en/latest/index.html] - Solang targets [https://solang.readthedocs.io/en/latest/targets.html#solana]