Welcome to Capsul
Capsul is an AI-powered app builder that turns plain-English descriptions into fully working single-file web apps — complete with a real SQLite database, live preview, and one-click deploy.
What makes Capsul different?
Real Database Per App
Every generated app gets its own persistent SQLite database. No fake localStorage hacks — actual SQL queries that survive page refreshes.
Bring Your Own AI Key
Your Groq, OpenRouter, or NVIDIA NIM key. Keys are AES-256 encrypted at rest. You control the model and the cost.
AI Inside Generated Apps
Generated apps can call AI at runtime via CapsulAI. Build recipe generators, content tools, chat assistants — all without a backend.
Download & Self-Host
Export any app as a standalone HTML file. Works offline with AlaSQL. No server needed to run a downloaded app.
Version History
Every generation is checkpointed. Browse the last 5 versions and restore any of them with one click.
One-Click Deploy
Get a shareable URL on your own domain in seconds. Apps are served directly from your VPS with Nginx.
Where to start
Enjoying Capsul?
Capsul is free and self-hosted. If it saves you time or money, consider supporting the VPS hosting costs.