SolidInvoice - Open-Source Self-Hosted Invoicing Platform

SolidInvoice - Open-Source Invoicing Platform

What is it?

SolidInvoice is an open-source, self-hosted invoicing platform designed for freelancers and small businesses. It solves the problems of opaque data and high costs in traditional invoicing tools by offering quotes, invoices, recurring billing, and online payments. The key highlight is complete data ownership, with multi-currency and multi-tenant support, built on a modern PHP stack for easy extension.

Convert quotes to invoices in one click
Automate recurring invoices
Multi-currency and multi-tax support
8 built-in PDF templates
Stripe/PayPal payment integration

Who is it for?

Freelancers, small business owners, and independent developers who need professional invoicing and value data privacy.

Send quotes and invoices to clientsAutomate recurring billing for subscriptionsManage invoicing for multiple companiesAccept online payments and track status

How can it grow? — Custom dev directions

Each is a concrete build plan. Like one? Let's talk.

Customize invoice templates and branding
Effort M
For: target: enterprises
Integrate more payment gateways
Effort L
For: target: e-commerce
Develop mobile PWA
Effort L
For: target: mobile users
Add multi-language support
Effort M
For: target: international users

FAQ

Is this software free?

Yes, it's completely free under the MIT license.

Where is my data stored?

In self-hosted mode, data is stored entirely on your server, ensuring privacy.

Can I modify it to fit my business?

Absolutely, the code is open source and you can customize it as needed.

Turn this project into your product

Describe your scenario — we reply with a plan & quote within 2 hours.

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