Remix IDE
Browser-based IDE for writing, compiling, testing and deploying Solidity smart contracts.
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Remix IDE key facts
| Category | Smart contract tool |
|---|---|
| Chains | Ethereum and EVM networks |
| Platforms | Web, Desktop |
| Pricing | Free; paid tiers from $9.99/mo |
| Free plan | Free forever, with 20,000 AI credits |
| Open source | Yes, Apache-2.0 on GitHub (remix-project-org/remix-project) |
What is Remix IDE?
Remix is a browser-based IDE for Solidity smart contracts that needs no local setup. A desktop app can run Foundry projects. The core IDE is free, with 20,000 AI credits; paid tiers start at $9.99 per month. Its code is on GitHub under Apache-2.0.
How Remix IDE works
Remix runs at app.remix.live.
You write Solidity in the editor, compile it, then deploy from the Deploy & Run module. The Environment setting picks where the transaction goes: an in-browser test chain, or a wallet such as MetaMask through Browser Extension. On public networks a switch submits source and metadata for verification on Etherscan, Sourcify, Blockscout and Routescan.
Loading an existing contract by address with Add Contract costs no gas. The IDE also has a step-through visual debugger and integrations with The Graph, Chainlink, Git, ENS and OpenZeppelin. Remix Desktop runs on macOS, Windows and Linux, works offline and has a native terminal for commands like Foundry fuzz tests. QuickDApp generates a front end for a contract and can deploy it to IPFS.
How to start with Remix IDE
- Open app.remix.live in Firefox, Chrome or Brave; the docs say tablets and phones are not supported.
- Write or paste a contract, compile it, and deploy to the built-in test chain first.
- When ready for a testnet or mainnet, switch the environment to your browser wallet.
- The in-app LearnEth plugin holds tutorials.
Remix IDE fees and limits
- Starter costs $9.99 a month with 40,000 credits, cloud workspaces and bring-your-own LLM key.
- Pro lists at $19.99 a month with 80,000 credits, the Contract Auditor agent, gas checks, and unlimited hosting for QuickDApp.
The Free plan includes the RemixAI assistant, QuickDApp and 20,000 AI credits. Deploying to a real chain also costs gas, paid from your wallet.
Risks to know before using Remix IDE
- By default Remix keeps files in the browser's IndexedDB, and the docs warn that a browser crash can wipe them.
- Back up with cloud storage, Remix Desktop or a Git remote; cloud storage is limited to users in the beta program, and its snapshots are kept for 7 days.
- The only valid URLs are app.remix.live, alpha.remix.live and beta.remix.live, and the team says staff will never DM you asking for private keys.
- Pin versions in imports, such as @openzeppelin/[email protected], for reproducible builds.
Remix IDE alternatives
Other projects people compare with Remix IDE.
Open-source Rust toolkit for building, testing, fuzzing and deploying Solidity smart contracts.
Development environment for compiling, testing, debugging and deploying Solidity contracts on EVM chains.
Open-source Solidity contract library plus smart contract audits and security services.
Where Remix IDE ranks on DappAtlas
Listed next to Remix IDE
Remix IDE pros and cons
- Runs in the browser with zero setup
- Free plan includes 20,000 AI credits
- Open source under Apache-2.0
- Browser workspaces suit small projects better than large codebases
- Contract auditing and cloud workspaces are on paid tiers
Remix IDE FAQ
What is Remix IDE?
Remix is a browser-based IDE for Solidity smart contracts that needs no local setup. A desktop app can run Foundry projects. The core IDE is free, with 20,000 AI credits; paid tiers start at $9.99 per month. Its code is on GitHub under Apache-2.0.
Which chains does Remix IDE support?
Ethereum and EVM networks.
How much does Remix IDE cost?
Free; paid tiers from $9.99/mo, according to Remix IDE’s own page (checked Sep 26, 2026). Free plan: Free forever, with 20,000 AI credits.
Is Remix IDE available in the US?
Available: terms name no country restrictions, according to Remix IDE’s own page (checked Sep 26, 2026).
Sources
How this page works
Sources: Remix IDE: official site, Remix: Home, Remix: GitHub repository. Data as of Sep 26, 2026.
Not affiliated with any project listed. Educational content, not financial advice.