# Open-source builds: what are you building?

> Blueprints for apps you can build from open-source software. Each links to a full Markdown blueprint an AI coding agent can follow.

- [Build a receipt scanner with open-source software](https://repoquarry.dev/builds/receipt-scanner.md): Snap a receipt and it lands in your own books. A local AI model reads the photo; nothing goes to a paid service.
- [Build a booking and invoicing system for a small business with open-source software](https://repoquarry.dev/builds/booking-business.md): Everything a coach, tutor or salon needs to take bookings and get paid.
- [Build a paid newsletter and creator site with open-source software](https://repoquarry.dev/builds/newsletter-business.md): A site, a paid newsletter and an audience you own, without beehiiv or Kit fees.
- [Build an AI voice agent with open-source software](https://repoquarry.dev/builds/ai-voice-agent.md): A phone or web voice assistant that listens, thinks and talks back, on your own hardware.
- [Build a self-hosted team workspace with open-source software](https://repoquarry.dev/builds/team-workspace.md): Projects, docs, chat and calls for a small team, replacing four subscriptions.
- [Build a price and listing tracker with open-source software](https://repoquarry.dev/builds/web-watcher.md): Watch prices, listings or event pages and get a message the moment something you care about changes.
- [Build a private chat-with-your-documents app with open-source software](https://repoquarry.dev/builds/chat-with-documents.md): Ask questions of your own PDFs, policies, manuals and letters, with nothing leaving your machine.
- [Build your own AI app builder and code reviewer with open-source software](https://repoquarry.dev/builds/vibe-workshop.md): Build apps from a prompt on your own machine, with an AI reviewer checking every change.
- [Build a life admin assistant with open-source AI agents](https://repoquarry.dev/builds/life-admin-autopilot.md): Hand off the dull admin, like cancelling subscriptions, school emails and sorting photos, to agents you run.
- [Build a meeting notes and voice-to-task assistant with open-source software](https://repoquarry.dev/builds/voice-to-tasks.md): Turn meetings and spoken notes into tasks, summaries and subtitle files.
- [Build a lead research and outreach assistant with open-source software](https://repoquarry.dev/builds/leads-and-content.md): Catch leads, research them and send a personal reply or post, without a sales-tool subscription.
- [Clean up a full Windows drive with open-source tools](https://repoquarry.dev/builds/windows-cleanup.md): Find out what is filling your PC, then clear junk, caches and duplicates with free tools, instead of a PC cleaner subscription.
---
Source: RepoQuarry (https://repoquarry.dev/builds). Data licence: CC BY 4.0. Quotes are from project documentation and belong to their authors.