# How to sign messages?

- [EVM](/how-to-integrate/guides/utility/how-to-sign-messages/evm.md)
- [Solana](/how-to-integrate/guides/utility/how-to-sign-messages/solana.md)
- [Aptos](/how-to-integrate/guides/utility/how-to-sign-messages/aptos.md)
- [EIP-6492 Compatible Signatures](/how-to-integrate/guides/utility/how-to-sign-messages/eip-6492-compatible-signatures.md): Fetcch supports EIP-6492 for pre-deployed smart accounts