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Foundry

Foundry is a comprehensive, command-line-based development toolkit designed for building, testing, and deploying smart contracts on the Ethereum blockchain.

Free tierPrice verified 2026-09-29Visit site ↗
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Our verdict

Who it's for

Blazing fast smart contract development toolkit for Ethereum.

Who should look elsewhere

Primarily command-line based, which might have a learning curve for some

Pros

  • +Blazing fast compilation and execution
  • +Comprehensive suite of tools for the entire dev lifecycle
  • +Ability to test against real chain state for robust testing
  • +Open-source and community-driven with active development
  • +Easy to install and get started

Cons

  • −Primarily command-line based, which might have a learning curve for some
  • −Requires familiarity with Ethereum development concepts

Key features

  • ✓Forge: Build, test, debug, deploy, and verify smart contracts
  • ✓Anvil: Run a local Ethereum development node with JSON-RPC compliance
  • ✓Cast: Interact with on-chain applications from the command line
  • ✓Ultra-fast compilation with dynamic_test_linking
  • ✓Test contracts against real-world chain state
  • ✓Fork mainnet for local development
  • ✓Load and dump state for Anvil nodes
  • ✓Call contract functions and send transactions via command line

Pricing

PlanPriceBillingNotes
Foundry—monthBlazing fast smart contract development toolkit; Ultra-fast compilation; Performant local node

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