Gatsby vs Harp

Gatsby is an open-source, React-based framework for building websites such as eCommerce and marketing sites, blogs, and documentation. It supports JavaScript and Node.js, and pages can be rendered with Static Site Generation, Deferred Static Generation, or Server-Side Rendering. Its GraphQL data layer gives page components a consistent way to request content, API, and service data. Gatsby also provides code-splitting, image optimization, lazy loading, and webpack. Its plugin library covers areas including CMS, styling, analytics, e-commerce, payments, authentication, and search; official integrations include hosting providers and content management systems. Gatsby 5 requires Node 18 and React 18. The open-source framework is free. A separate Free plan costs nothing and includes a 300-credit monthly limit, unlimited deploy previews, and custom domains with SSL. Personal costs $9 a month and Pro costs $20 a month; Enterprise pricing is custom. Projects pause when monthly usage limits are reached.

Harp has no write-up on Specifiction yet; its figures are above.