Invoicerr
Open-source invoicing app for freelancers to issue invoices and quotes.
716 stars 56 forks last commit first released AGPL-3.0
Actively maintained
Last commit 23 Jul 2026.
Invoicerr is a simple, open-source invoicing application designed for freelancers to manage their quotes and invoices efficiently. It provides a clean interface for creating, sending, and tracking quotes and invoices — so you get paid faster, with less hassle.
Key Features
- Create and manage invoices
- Create and manage quotes (convertible to invoices)
- Manage clients and their contact details
- Track status of quotes and invoices (signed, paid, unread, etc.)
- Built-in quote signing system with secure tokens
- Generate and send quote/invoice emails directly from the app
- Generate clean PDF documents (quotes, invoices, receipts, and more)
- Custom brand identity: logo, company name, VAT, and more
- Authentication via JWT or OIDC (stored in cookies)
- International-friendly: Default English UI, customizable currencies
- SQLite database for quick local setup
- Docker & docker-compose ready for self-hosting
- Built with modern stack: React, NestJS, Prisma, SQLite/PostgreSQL
- REST API backend, ready for future integrations (mobile & desktop apps)
- Plugin system for community-made features
Use Cases
- Freelancers and solo operators issue invoices and track payments for multiple clients
- Small teams convert quotes to invoices, send via email, and monitor statuses
- Agencies manage client billing and generate PDFs for records and audits
Limitations and Considerations
- Docker images are built for linux/amd64 and linux/arm64/v8; 32-bit ARM architectures are not supported due to Prisma requirements
- Local development and self-hosting require some technical setup (Docker or Node.js environment) to run
Conclusion
Invoicerr provides a focused, self-hosted invoicing solution with quotes, invoices, client management, and secure signatures. Its modern stack (React/NestJS/Prisma) and Docker-based deployment make it suitable for freelancers and small teams who want control over their data and workflows.
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