这是什么？
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
适合谁用？
Freelancers, small business owners, and independent developers who need professional invoicing and value data privacy.
还能怎么长？—— 二次开发方向预案
每一条都是可落地的改造方案。看中哪条，直接聊。
Customize invoice templates and branding
工作量 M适用：target: enterprises
Integrate more payment gateways
工作量 L适用：target: e-commerce
Develop mobile PWA
工作量 L适用：target: mobile users
Add multi-language support
工作量 M适用：target: international users
常见问题
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.
把这个项目改成你的产品
描述你的场景，我们评估后给出方案与报价（承诺 2 小时内回复）。加微信沟通更快。
