Free & open source · no install required

Build and deploy smart
contracts in seconds

EtherLab is a browser-based Solidity IDE for turning ideas into deployed contracts — write code, compile, and push to any EVM chain without leaving the tab.

50+
Compiler versions
0s
Setup time
6
Ready-made templates

Deploy instantly

Compile and push contracts to a local VM or any live network in a couple of clicks.

Connect any wallet

MetaMask, Phantom, and other browser extension wallets — pick what you already use.

50+ compiler versions

Switch between Solidity releases and optimizer settings without reinstalling anything.

Ready-made templates

Start from ERC-20, ERC-721, multisig, voting, or auction contracts instead of a blank file.

EtherLab — Browser-based Solidity IDE for Ethereum Smart Contract Development

EtherLab
v1.0
Full Screen

File explorer

Compilation

Deploy

Deployed contracts

Search

Debugger

Select a past transaction from the recorder below, or paste a transaction hash above to start debugging. This will step through the targeted contract's execution.
Step controls
VM trace step
—
Transactions recorder
No recorded transactions yet. Deploy or call a contract to see it here.

Python Automation

The bot periodically attempts to call the selected function on a deployed contract, respecting the gas price limit and cooldown. No private key is ever stored — every sent transaction still requires your confirmation in MetaMask.
These are checked for a potential opportunity every cycle (via eth_estimateGas) and logged, but never sent — only the function above actually executes and needs a MetaMask confirmation.
Status
Stopped. Attempts: 0, trades: 0.
Block Scanner (real-time, Ethereum Mainnet)
Runs automatically with the bot (Start/Stop above) — connects directly to a public Ethereum Mainnet WebSocket RPC (no API key required) and watches for Uniswap swap events in real time. Detected swaps are printed to the Logs panel below with who swapped and the amounts moved.
Stopped. Swaps detected: 0.

No file open

Create or select a .sol file from the File Explorer to start editing.

Logs

Welcome to EtherLab
Your Web3 development environment is ready to use.
You can use this console to:
  • Monitor contract compilation and deployment
  • Track wallet connections and transactions
  • Debug smart contract interactions
  • View real-time event logs and errors
Available features:
  • Solidity compiler — compile your smart contracts
  • Multi-wallet support — connect via MetaMask, Phantom & more
  • Multi-file support — organize your code with folders
  • Real-time feedback — see compilation and deployment status instantly
Start by connecting your wallet or creating a new Solidity file.