Real, or it doesn’t ship
Every listing has a live demo and a runnable download. No fabricated download counts, no invented trust scores, no “coming soon” dressed up as done. If a number appears on this site, it’s true.
Good software deserves a running start.
Foundationbase is a library of small, honest apps. Not mockups, not generated boilerplate — working software you can try in your browser, download in one click, and reshape with your AI coding agent. Everything is free and open source — MIT, apart from one app that is Apache-2.0 and says so on its own page. We would rather earn your trust first and figure out the business model later.
Built for the AI coding era
Every download ships with CLAUDE.md, AGENTS.md, Cursor rules, and a full agent handbook — project map, safety rules, recipes. Your agent opens the folder already knowing where everything lives.
Yours, actually
Local-first by default: your data stays in your browser until you decide otherwise. The storage layer is one clean boundary, so swapping in a real backend is an afternoon, not a rewrite.
What makes a foundation different
- Working demo
- Editable source
- Setup instructions
- AI-agent handoff files
- Customization path
- Deploy guidance
- App Link and install guidance
- Clear license
Who this is for
- People who want personal apps they control
- Founders testing product ideas
- Builders using Claude Code, Codex, Cursor, or similar tools
- Developers who want clean starting points
- Non-engineers who want AI to customize working software
Built for safe starting points
Every foundation is treated as code, not content. Contributions are reviewed before publication, and foundations are checked for hidden network behavior, unsafe scripts, secrets, and unclear setup paths.
Every app here has to pass five questions
- Can I trust it?
- Can I understand it quickly?
- Can I change it safely?
- Can I run it today?
- Will my AI agent get it immediately?