Spiral

Spiral is a Bitcoin-focused open-source grant program supporting developers and designers worldwide. Their grants fund various Bitcoin projects, including Bitcoin Dev Kit (BDK), Lightning Dev Kit (LDK), Bitcoin Design Community (BDC), BTCPay Server, Validating Lightning Signer, The Eye of Satoshi (watchtower), CoinSwap (privacy enhancement), Summer of Bitcoin (internship program), Wallet Scrutiny (wallet security analysis), and ZeroSync (ZK proofs for Bitcoin). For more information and to apply for a grant, visit the Spiral website.