The VC funded JS startups have no incentive to promote this, but you can still just call renderToString in any ES runtime to SSR your React components. There's

The VC funded JS startups have no incentive to promote this, but you can still just call renderToString in any ES runtime to SSR your React components. There's definitely more boilerplate to deal with, but you could easily get away with doing SSR in a lightweight runtime like QuickJS.