Lerna vs Nx
Which should you use? A side-by-side look at what each one does, who it suits, what it costs, how hard it is to set up, and where each falls short.
Open source · MIT
A build and publish tool for managing several JavaScript/TypeScript packages in one repository.
Open source · MIT
A build tool for monorepos that caches unchanged work and runs only what's affected.
The short answer
Choose Lerna if you need…
- JavaScript or TypeScript teams maintaining several related npm packages in one repository
- Maintainers who need to version and publish multiple packages together
- Developers who already work in a monorepo layout and want tooling for it
Choose Nx if you need…
- Teams with several related JavaScript or TypeScript projects in one repository
- Developers who want to speed up existing package.json scripts without rewriting their setup
- Projects that use tools such as Vite, Jest, Vitest, or ESLint and want plugin-based configuration
- Teams looking to split CI work across machines
Side-by-side
| Lerna | Nx | |
|---|---|---|
| Type | Dev tool | Dev tool |
| Price | Free and open source | Free and open source |
| Licence | MIT | MIT |
| GitHub stars | 36k | 29.4k |
| Setup difficulty | Intermediate | Intermediate |
| How you get it | Install with a package manager | Install with a package manager |
| Main language | TypeScript | TypeScript |
| Last code update | 5 days ago | 4 days ago |
What each one is
Lerna
Lerna is a command-line tool for projects that keep multiple JavaScript or TypeScript packages in a single repository, called a monorepo. It helps build those packages and publish them to npm. The README describes it as a fast, modern build system, but it also notes that the project changed stewardship to Nx, so the README points readers to Nx resources for ongoing support.
Nx
Nx is a tool for managing a monorepo, a single repository holding many related projects. It speeds up builds and tests by caching results for code that hasn't changed and running only the tasks affected by a change. It works with existing npm, pnpm, or yarn workspaces and can connect to CI providers for remote caching and task distribution.
Best for
Lerna
- JavaScript or TypeScript teams maintaining several related npm packages in one repository
- Maintainers who need to version and publish multiple packages together
- Developers who already work in a monorepo layout and want tooling for it
Nx
- Teams with several related JavaScript or TypeScript projects in one repository
- Developers who want to speed up existing package.json scripts without rewriting their setup
- Projects that use tools such as Vite, Jest, Vitest, or ESLint and want plugin-based configuration
- Teams looking to split CI work across machines
Strengths
Lerna
- Widely starred and used, with an MIT license that permits commercial use
- Covers both building and publishing packages in a monorepo
- Documentation site and getting-started guide are linked from the README
Nx
- Works on top of existing package.json scripts without requiring a rewrite, according to the README
- Supports TypeScript plus other ecosystems through plugins, including Gradle, Maven, .NET, and Go
- Released under the MIT license with a large community (about 29k GitHub stars)
Not ideal for
Lerna
- Single-package projects, since the tool is built for managing multiple packages (reason: little benefit without a monorepo)
- Teams that need guaranteed current direction for the project, since the README says stewardship moved to Nx (reason: check the linked Nx announcement before adopting)
- Users looking for a non-JavaScript build tool (reason: the README covers only JavaScript/TypeScript packages)
Nx
- Single-project repositories, where the caching and affected-only features add little value (the README's benefits center on multi-project setups)
- Teams unwilling to learn a new workspace configuration model
- Projects needing a fully hosted CI service, since the README describes CI integration with existing providers such as GitHub Actions or GitLab
Trade-offs
Lerna
- The README states stewardship changed to Nx, so long-term direction may differ from the original project
- The README is truncated and gives limited detail on specific commands or configuration
- Its scope is narrow: it targets monorepos of JavaScript and TypeScript packages only
Nx
- Several headline features (self-healing CI, remote caching) are described in terms of the separate Nx Cloud service, so the free and paid boundaries are not clear from this README
- The README's AI-agent and self-healing claims are broad and are not detailed here, so their real-world behavior is hard to judge from this text alone
- Advanced configuration and plugin behavior are only summarized here and need the full docs
Getting started
Lerna
Clone the repository
git clone https://github.com/lerna/lernaFrequently asked questions
What is the difference between Lerna and Nx?
Lerna: A build and publish tool for managing several JavaScript/TypeScript packages in one repository. Nx: A build tool for monorepos that caches unchanged work and runs only what's affected. Lerna suits javascript or typescript teams maintaining several related npm packages in one repository, while Nx suits teams with several related javascript or typescript projects in one repository.
Are Lerna and Nx free?
Lerna: Free and open source. Nx: Free and open source.
Is Lerna or Nx more popular?
Lerna has more GitHub stars (36k) than Nx (29.4k). Popularity isn't the same as fit — check which one matches your use case above.
What are other alternatives to Lerna and Nx?
Other options people compare them with include Turborepo, Storybook, Mitosis, GraphQL Code Generator, Cypress.
Keep comparing
Built from our catalogue entries for both products: open-source details come from each project's README (AI-assisted, refreshed weekly) and GitHub data; AI-tool details are editorial. Spotted something wrong? Let us know from either product's page.