Contract tooling

BuildBear

Contract frameworks

Testing · Multi-chain · Developer experience

BuildBear is a hosted service that spins up a private testnet sandbox mirroring a real chain such as Ethereum, Polygon, BSC, or Arbitrum. Builders point tests at it to work against a private fork with real chain state.

Related resources

Ape Framework

The smart contract development tool for Pythonistas, Data Scientists, and Security Professionals

Scaffold-ETH 2

Scaffold-ETH 2 is a Next.js plus Hardhat or Foundry starter with wallet hooks, hot contract reload, local faucet utilities, and extension modules for full-stack dapp deployment.

Brownie

A Python-based development and testing framework for smart contracts targeting the Ethereum Virtual Machine.

Remix Project

A rich and accessible Web3 toolset for learning, building, and testing on multiple chains

Moccasin

Moccasin is Cyfrin's Python-first workflow on Titanoboa for testing, fuzzing, and deploying Vyper written smart contracts.

Wake

Wake is a Python framework for testing, fuzzing, and static analysis of Solidity projects. Builders reach for it when they want to write contract tests and fuzzing campaigns in Python and run analysis over the same codebase.