Testnet faucets:
- Starknet sepolia: https://starknet-faucet.vercel.app/
- Bitcoin testnet3: https://bitcoinfaucet.uo1.net/
Explorer links:
- Starknet sepolia: https://sepolia.voyager.online/
- Mempool testnet3: https://mempool.space/testnet
Cashu lightning wallet: https://wallet.cashu.me/