Run Solidity entries in sequence, see exactly what changed, and replay the complete investigation.
Joined September 2026
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Need mainnet state?
Fork an Ethereum block and interact with contracts locally.
RPC is used to fetch the required state.
Execution still happens inside the browser.
Solidity REPL retweeted
I'm building in crypto/Web3 and always looking to meet more people who are serious about shipping.
If you're building something or looking for your next opportunity in the crypto/Web3, drop a reply with what you're working on or what you're looking for.
let's build together 🤝
Solidity REPL supports more than simple expressions.
You can work with:
contracts
interfaces
libraries
imports
storage
events
external calls
Your entries build into a real Solidity program as you go.
Sometimes you don't need a full Foundry project.
You just want to answer:
"What does Solidity actually do here?"
Write the expression.
Run it.
Inspect the result.
Solidity REPL retweeted
Testing Solidity directly in browser with @SolidityREPL.
Import files from any public Git repository.
Solidity REPL retweeted
Solidity experiments should take seconds.
I wrote about why I built @SolidityREPL, its replay-based execution model, EVM inspection, and why it complements tools like Foundry instead of replacing them.
Solidity REPL retweeted
I got tired of creating a Foundry project just to answer one stupid Solidity question.
So I built @SolidityREPL.
Browser-based. No install. No setup.
Write Solidity.
Run it instantly.
Fork any EVM-compatible chain.
Inspect storage, calls, logs, reverts, and opcodes.
solidity-repl.dev/
Introducing Solidity REPL.
A browser-native environment for exploring Solidity and EVM behavior without creating a project, writing boilerplate, or deploying anything.
solidity-repl.dev/