Category: Productivity AI
Pricing: Free — Free to use
Turn ideas into full‑stack web apps fast.
Capacity is a credit‑based AI development tool that turns plain‑language ideas into full‑stack web applications, positioning itself as an “AI cofounder” for founders, indie hackers, and product teams. It focuses on specification‑driven development through its Spec Coding workflow, where users define a project brief, UX, and design requirements before the AI generates production‑ready code. The platform produces modern web apps using technologies such as Next.js, React, TypeScript, Tailwind CSS, and Supabase, and supports both quick “vibe coding” experiments and more rigorous production builds.