head to head · open source
ERPNext vs SolidInvoice
ERPNext has 39,326 GitHub stars, 12,835 forks, 1,822 open issues and last shipped yesterday. SolidInvoice has 971 stars, 235 forks, 190 open issues and last shipped 2 days ago. ERPNext leads on adoption by 3,950% (39,326 vs 971 stars). ERPNext is written in Python under GPL-3.0; SolidInvoice is written in PHP under MIT. ERPNext has attracted 33% as many forks as stars, SolidInvoice 24%. ERPNext was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| ERPNext | SolidInvoice | |
|---|---|---|
| GitHub stars | ★ 39K | ★ 971 |
| License | GPL-3.0 | MIT |
| Written in | Python | PHP |
| Last push | 2026-09-17 | 2026-09-16 |
| Forks | ⑂ 13K | ⑂ 235 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick ERPNext if
- You weight community size — 39K stars and counting
- You want the GPL-3.0 license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick SolidInvoice if
- You want the SolidInvoice feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches PHP
- You evaluated both and SolidInvoice fits your workflow better
About ERPNext
ERPNext is a free and open source Enterprise Resource Planning system built on the Frappe Framework. It unifies core business functions—including accounting, procurement, manufacturing, CRM, HRMS, and asset management—into a single platform, eliminating the need for multiple proprietary tools. The project lives in the Python based Frappe ecosystem and is licensed under GPL 3.0.
read the full ERPNext overview →
About SolidInvoice
SolidInvoice is an MIT licensed, self hostable invoicing and billing platform built on Symfony and PHP for freelancers and small businesses that want to send quotes and invoices without handing their client data to a subscription SaaS.
read the full SolidInvoice overview →
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Frequently asked questions
Is ERPNext or SolidInvoice more popular?
ERPNext has 39,326 GitHub stars and SolidInvoice has 971. ERPNext has the larger community by that measure.
Are ERPNext and SolidInvoice free?
Both are open source. ERPNext is licensed under GPL-3.0 and SolidInvoice under MIT. Neither carries a licence fee.
What is the difference between ERPNext and SolidInvoice?
ERPNext is written in Python and SolidInvoice in PHP. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, ERPNext or SolidInvoice?
Choose ERPNext if you want the larger community (39,326 stars) or its GPL-3.0 licence terms. Choose SolidInvoice if its feature set, stack or MIT licence fits better. Both are self-hostable.