A React framework adding server-side rendering, file-based routing, and API routes out of the box — used for both SEO-sensitive marketing sites and full SaaS products.
Why I use it
Server-rendering out of the box means marketing pages are actually crawlable and fast, not a client-rendered blank shell
File-based routing and API routes remove a lot of setup that a plain React app needs hand-rolled
One framework covers both the public site and the authenticated app behind it
Where it fits
SEO-sensitive marketing sites that still need real interactivity
Full SaaS products where both the landing page and the product need to be fast
Current version
Next.js 15.x era, App Router as the default paradigm — confirm the current version before publishing.