Monorepo Tools Comparison: Turborepo vs Nx vs Lerna in 2025

Monorepos contain multiple packages or applications in a single repository. When done well, they improve code sharing, dependency management, and cross-package refactoring. When done poorly, they're a build system nightmare where every change takes 10 minutes to verify. The right monorepo tooling is what separates the two outcomes. What Monorepo Tools Actually Do Before comparing tools, understand what problem they solve. A monorepo with 10 packages naively runs builds like this: Change one utility package Run build/test for all 10 packages (because you can't easily know what's affected) With monorepo tools: Change one utility package Tool identifies which packages depend on the changed package (via dependency graph) Only those packages are rebuilt/retested Previous build results for unchanged packages are served from cache This is the core value: incremental computation and task orchestration based on the dependency graph . Turborepo Turborepo was acquired by Vercel in 2021 and has be