Internal Tool / Dashboard

Vercel for the Next.js frontend, Neon for serverless Postgres (scale-to-zero so it costs nothing when nobody's logged in at 2am), and Clerk for auth with SSO + organizations baked in. Supabase is listed as the all-in-one alternative if you'd rather have one vendor for DB + auth. The trade-off vs. Retool/Appsmith is you're writing real code instead of dragging components — slower for the first dashboard, but every subsequent one is free and the UX isn't bound to their component library. Picking Clerk over Supabase Auth specifically buys you orgs/teams + SSO without writing it yourself, which matters for B2B internal tools where 'who can see what' is half the work.