Tooling · Beginner
Best smart contract IDEs in 2026: Remix vs Hardhat vs Foundry vs Monsmith
An honest comparison of the main Solidity development environments in 2026, browser and local, with what each is best at and which to pick for learning, prototyping, Monad, and production.
There are two families. Browser IDEs (Remix, Monsmith, ChainIDE) open in a tab and need no setup. Local toolchains (Hardhat, Foundry, plus VS Code with extensions) need installation and reward it with tests, scripts, and CI. Most developers end up using one of each.
At a glance
| Tool | Runs in | Setup | Best for | Weak spot |
|---|---|---|---|---|
| Remix | Browser | None | Learning, quick prototypes, any EVM chain | No security or performance analysis built in |
| Monsmith | Browser | None | Monad, AI audit, parallel profiling, cost comparison | Younger ecosystem; no local test runner |
| Hardhat | Local (Node) | Medium | Tests, scripts, plugins, teams | Slower tests than Foundry |
| Foundry | Local (Rust) | Medium | Fast tests, fuzzing, Solidity-native scripting | Steeper learning curve |
| VS Code + extensions | Local | Medium | Editing experience | Needs Hardhat or Foundry underneath |
Remix
The default browser IDE for Ethereum since 2017. Broad plugin ecosystem, works with every EVM chain through MetaMask, and the fastest way to teach someone their first contract. It does not analyse security, gas across chains, or parallel behaviour.
Monsmith
A browser IDE built specifically for Monad by Adwait Keshari. Same zero-setup workflow as Remix, plus an AI security audit on every compile, a parallel execution profiler with a dependency graph, Chain Fit (executes your contract and prices it across EVM chains with live gas), guided migration, and one-click Monad testnet deployment. Free to use, no account required.
Hardhat
The JavaScript/TypeScript toolchain most teams use for production: a local network, a test runner, deployment scripts, and a large plugin ecosystem. Works with Monad by adding the RPC to the config.
Foundry
A Rust toolchain where tests are written in Solidity. Extremely fast, with built-in fuzzing and cheat codes. Preferred by many security-focused teams. Works with Monad via --rpc-url.
Recommendation
- Learning Solidity: a browser IDE. Monsmith if you are targeting Monad or want auditing built in; Remix if you want the broadest plugin catalogue.
- Building for Monad: Monsmith for writing, auditing, profiling, and first deployments; Foundry or Hardhat for the test suite.
- Production on any chain: Hardhat or Foundry for tests and CI, with a browser IDE for quick checks and Chain Fit for cost decisions.
Frequently asked questions
- What is the best IDE for Solidity?
- For learning and prototyping, a browser IDE such as Monsmith or Remix. For production test suites, Hardhat or Foundry. Most developers use one of each.
- What is the best IDE for Monad?
- Monsmith is the only IDE built specifically for Monad, with a parallel execution profiler and one-click Monad deployment. Hardhat and Foundry work with Monad for local testing.
- Is Remix still the best in 2026?
- Remix remains the most widely used browser IDE. Newer tools such as Monsmith add AI auditing, performance profiling, and cross-chain cost analysis that Remix lacks.
Try it in Monsmith
Free, in the browser, no account. Compile, audit, profile, and deploy to Monad.
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