React

Bolt

AI app builder — prompt to a deployed full-stack app in your browser

Builder.io Fusion

AI agent turning Figma frames into design-system-matched code

CopilotKit

Open-source React/Angular UI layer for in-app AI agents

Databutton

Pivoted to Riff: ERP-connected AI agents for procurement teams

Lovable

Build full-stack apps by describing them in plain English

Tempo

Prompt-to-React visual editor, now with a $4,500/mo human tier

v0 by Vercel

Vercel's AI that generates React and Tailwind UI components from plain text — deploy instantly to the web.