# BUILD ON HeLa

- [HeLa Architecture](/build-on-hela/hela-architecture.md)
- [HeLa Runtime (EVM)](/build-on-hela/hela-runtime-evm.md)
- [Estimate Gas](/build-on-hela/estimate-gas.md)
- [Build on Testnet](/build-on-hela/build-on-testnet.md)
- [Deploy Smart Contracts with Remix](/build-on-hela/build-on-testnet/deploy-smart-contracts-with-remix.md)
- [Deploy Smart Contracts with Hardhat](/build-on-hela/build-on-testnet/deploy-smart-contracts-with-hardhat.md)
- [Deploy Smart Contracts with Foundry](/build-on-hela/build-on-testnet/deploy-smart-contracts-with-foundry.md): We’ll create a simple SplitWise app, a contract where friends can track and settle debts.