Best Memex alternatives

StackBlitz's in-browser AI app builder, generating full-stack web and mobile apps from prompts with instant live preview via WebContainers.

AI app builder turning prompts, and hand-drawn sketches via Draw-to-Build, into full-stack web apps with built-in Supabase, Stripe, and file storage.

Replit's autonomous app-building agent that plans, writes, and deploys a full application from a prompt, provisioning its own database and hosting inside Replit's cloud IDE.

Vercel's AI UI and app builder, rebranded from v0.dev to v0.app, with a Design Mode for visual editing, Figma import, and agentic full-stack generation.

No-code platform that turns plain-language prompts into full-stack apps, websites, and AI agents. Acquired by Wix for about $80 million in 2025.