head to head · open source
Lago vs invoicerr
Lago has 10,568 GitHub stars, 750 forks, 23 open issues and last shipped yesterday. invoicerr has 721 stars, 57 forks, 41 open issues and last shipped yesterday. Lago leads on adoption by 1,366% (10,568 vs 721 stars). Lago is written in Go under AGPL-3.0; invoicerr is written in TypeScript under AGPL-3.0. Lago has attracted 7% as many forks as stars, invoicerr 8%. invoicerr was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (open-source), so they are genuine substitutes rather than adjacent tools.
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
| Lago | invoicerr | |
|---|---|---|
| GitHub stars | ★ 11K | ★ 721 |
| License | AGPL-3.0 | AGPL-3.0 |
| Written in | Go | TypeScript |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 750 | ⑂ 57 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Lago if
- You weight community size — 11K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches Go
- You value the larger contributor base for long-term maintenance
pick invoicerr if
- You want the invoicerr feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches TypeScript
- You evaluated both and invoicerr fits your workflow better
About Lago
Lago is an open source metering and usage based billing API written in Go under AGPL 3.0. It lives in the Business Software and Finance & Accounting ecosystem and sits between product usage and revenue. It turns events such as AI tokens, compute, API calls, seats, and custom events into billable metrics, pricing, credits, entitlements, invoices, and payments.
About invoicerr
Invoicerr is open source freelance focused invoicing app. It creates quotes, generates invoices, tracks payments, and collects secure signatures. It lives in open source business software and finance & accounting ecosystem. Project uses TypeScript, React, NestJS, Prisma, SQLite or PostgreSQL, and AGPL 3.0 license. GitHub shows 721 stars, 57 forks, 41 open issues, one year repo age, and last push on 2026 09 15.
read the full invoicerr overview →
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Frequently asked questions
Is Lago or invoicerr more popular?
Lago has 10,568 GitHub stars and invoicerr has 721. Lago has the larger community by that measure.
Are Lago and invoicerr free?
Both are open source. Lago is licensed under AGPL-3.0 and invoicerr under AGPL-3.0. Neither carries a licence fee.
What is the difference between Lago and invoicerr?
Lago is written in Go and invoicerr in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Lago or invoicerr?
Choose Lago if you want the larger community (10,568 stars) or its AGPL-3.0 licence terms. Choose invoicerr if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.