"Pick the most popular one" is bad advice when the popularity gap is small and the architectural fit gap is large.
By 2026 the React framework market consolidated to three serious choices for new projects: Next.js, Astro, and Remix (now part of React Router). Each one optimizes for a different workload, and choosing wrong adds 6-12 months of friction.
Next.js: full-stack, full-power, full responsibility
Next.js is the default for products that need server-rendered HTML, on-demand revalidation, server actions, and deep integration with Vercel's edge platform. It is the most expressive of the three — and the most complex. If your product is a SaaS application with auth, billing, role-based dashboards, and a marketing surface, Next.js is the safe pick.
Astro: when the page is mostly content
Astro shipped with a heretical idea: most websites are mostly static. Marketing sites, documentation, blogs, and landing pages do not need a JavaScript runtime on every byte. Astro renders MDX and components to static HTML and only ships JavaScript for the interactive islands you mark explicitly. For content-heavy sites Astro's bundle size is often 10x smaller than Next.js.
Remix and React Router 7
The Remix lineage believes the web platform's primitives — forms, links, nested routes — are correct, and the framework should lean into them. The result is an app that works without JavaScript, then enhances when JavaScript loads. For products with complex form-heavy workflows (B2B internal tools, admin panels, multi-step checkouts) this model is unbeatable.
The decision tree
- Marketing site, blog, documentation? Astro.
- SaaS app with auth, billing, dashboards? Next.js.
- Form-heavy enterprise tool, progressive enhancement matters? Remix / RR7.
- Already on Next.js with a competent team? Stay there. The cost of a framework switch usually exceeds the benefit.
What we run
For our own marketing site we run Astro for the static surface and Livewire for the form-heavy admin. For client SaaS work the default is Next.js with React Server Components. We have shipped one large Remix project for a logistics customer where the entire UI is forms, and it remains the cleanest codebase we maintain.