Hygen vs Nx

Hygen is a free, open-source code generator that runs in a project and creates code from templates. Its generators are self-contained, with folder structure defining the commands, and it looks for a local `_templates` directory so templates can stay beside project code. Built-in scaffolds help create generators, including through prompts. Templates use EJS and frontmatter, where a `to` value can set the generated file destination. Generators accept command-line arguments, interactive or multi-step prompts, file creation, and content injection into existing files. Templates can also run shell commands, while actions can select matching files with strings or regular expressions. A documented `--dry` option supports test-running generators. Hygen was built for React, Redux, and Node.js boilerplate but can be used with any technology. It runs on Linux, macOS, and Windows, is MIT licensed, and is distributed through Homebrew, npm, Yarn, npx, and standalone binaries.

Nx is a build system for JavaScript and TypeScript monorepos, with plugins that can extend its work to other languages. It builds project and task graphs, follows task dependencies, and runs work in parallel where possible. Nx Core provides local caching; Nx Cloud adds a remote cache shared by teams and CI, and can distribute tasks across Nx Agents according to CPU and memory use. Plugins can infer tasks, generate or alter code, update dependencies, and provide executors. Documented integrations include Angular, React, Vue, Node.js, Java, .NET, Vite, Webpack, Rspack, Jest, Cypress, and Playwright. Nx also provides CI workflow setup for GitHub, CircleCI, GitLab, Azure Pipelines, Jenkins, and Bitbucket Pipelines. Nx Cloud describes trusted-branch cache writes, artifact traceability, and invalidation of artifacts made with revoked tokens. API communications are encrypted in transit, and task artifacts can be encrypted end to end before remote caching. Hobby is free forever, with monthly credits, contributor and CI-connection limits; Team is $29/month, with additional listed charges for usage, contributors, and connections.