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Clarinet

Writing, testing and deploying Clarity smart contracts on Stacks.

Clarinet

Hiro

Best for Writing, testing and deploying Clarity smart contracts on Stacks

Chains
Stacks
Price
Free (open source)

A command-line toolkit and Clarity runtime for writing, testing and deploying Clarity contracts, with a REPL, a JavaScript test SDK built on Vitest, a linter and formatter, a VS Code extension with a debugger, and a local devnet that runs Stacks and Bitcoin nodes in Docker. Free and open source. Its docs name Stacks simnet, devnet, testnet and mainnet.

Catch Only for Clarity on Stacks, and the local devnet needs Docker

Visit Clarinet Checked Oct 17, 2026 against the maker's page for Clarinet (price and verdict source)

Chain support, with sources

We only add a chain when the maker's own docs name it. "EVM-compatible" alone counts for no specific chain. A testnet-only record means the page we checked only shows testnet; it isn't a finding that mainnet is unsupported. This is what the docs say, not a test or security review.

Common questions about Clarinet

Which blockchains does Clarinet support?
The maker's docs name mainnet support for Stacks. Every chain links to the maker's own page above.
How much does Clarinet cost?
Free (open source).
Is Clarinet open source?
Yes.

Docs: docs.stacks.co/clarinet/overview

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