Foundry
MIT/Apache-2.0 EVM toolkit: forge, cast, anvil, chisel
Rust / Smart Contracts · Apache-2.0 · 10.7k
Reviewed 2026-10-18 · last push 2026-10-19 · repo checked 2026-10-19
What's Good
Dual MIT or Apache-2.0 (foundry-rs/foundry, your choice), release v1.8.5 (2026-10-05). foundryup installs everything, and forge init, forge build and forge test get a project running in a minute. anvil --fork-url forks a live chain locally, so you can test against real contract state. forge lsp brings a bundled Solidity language server for VS Code and other editors. ★~10.7k.
The Catch
EVM chains only: it does nothing for Solana or other non-EVM chains. Tests are written in Solidity rather than JavaScript or TypeScript, which is a real shift for teams coming from Hardhat and their existing test suites. It is a toolkit, not an audit: passing fuzz tests are not a security review.
Verdict
The default toolkit for new Solidity projects — budget time to port tests if you're moving off Hardhat.
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