For invoicing, the practical question is not just whether a tool can send bills, but whether the project looks healthy enough to rely on. This May 2026 snapshot compares open/source-visible invoicing tools using ToolVitals data for health, shipping activity, openness, license, GitHub stars, and overall score.
The ranking includes only open/source-visible tools and sorts first by ToolVitals score, with GitHub stars used as a secondary popularity signal when scores are tied. All listed tools in this set are labeled OSI-approved OSS, with licenses shown exactly as reported.
Rankings
| Rank | Tool | Openness | License | Health | Shipping | GitHub Stars | Score | Status |
|---|---|---|---|---|---|---|---|---|
| 1 | InvoiceShelf | OSI-approved OSS | AGPL-3.0 | 81 | 89 | 1680 | 82 | 🟢 Excellent |
| 2 | Billmora | OSI-approved OSS | MIT | 74 | 89 | 4 | 82 | 🟢 Excellent |
| 3 | Miru | OSI-approved OSS | MIT | 86 | 62 | 257 | 81 | 🟢 Excellent |
| 4 | SolidInvoice | OSI-approved OSS | MIT | 85 | 62 | 881 | 79 | 🟢 Good |
| 5 | Ubilling | OSI-approved OSS | GPL-2.0 | 84 | 56 | 179 | 76 | 🟢 Good |
| 6 | Easy Invoice PDF | OSI-approved OSS | AGPL-3.0 | 67 | 57 | 839 | 68 | 🟢 Good |
| 7 | Upcount | OSI-approved OSS | GPL-3.0 | 74 | 0 | 383 | 52 | 🟡 Fair |
| 8 | Oreko | OSI-approved OSS | AGPL-3.0 | 71 | 0 | 15 | 52 | 🟡 Fair |
| 9 | BillKu | OSI-approved OSS | MIT | 46 | 38 | 2 | 52 | 🟡 Fair |
| 10 | Consultant AI | OSI-approved OSS | MIT | 49 | 21 | 0 | 47 | 🟡 Fair |
| 11 | Crater | OSI-approved OSS | AGPL-3.0 | 36 | 0 | 8282 | 34 | 🔴 Needs Attention |
| 12 | Accountill | OSI-approved OSS | MIT | 36 | 0 | 1691 | 34 | 🔴 Needs Attention |
| 13 | BoxBilling | OSI-approved OSS | Apache-2.0 | 28 | 0 | 835 | 31 | 🔴 Needs Attention |
| 14 | BillForge | OSI-approved OSS | MIT | 29 | 0 | 6 | 30 | 🔴 Needs Attention |
Top 3 Highlights
InvoiceShelf ranks first with a ToolVitals score of 82, a health score of 81, and the strongest shipping score in the set at 89. It is labeled OSI-approved OSS under AGPL-3.0, has no pricing scope reported, and has 1,680 GitHub stars. Its combination of high shipping activity and solid health makes it the clearest leader in this invoicing group.
Billmora also scores 82 overall and matches InvoiceShelf on shipping score at 89, but it has only 4 GitHub stars, which is why it sits behind InvoiceShelf under the stated tie-break rule. It is labeled OSI-approved OSS under MIT, with no pricing scope reported. The data points to strong recent project activity, but the very small GitHub footprint is worth treating cautiously.
Miru ranks third with a ToolVitals score of 81 and the highest health score in the list at 86. Its shipping score is lower at 62, but still enough for an Excellent status in this snapshot. It is labeled OSI-approved OSS under MIT, has no pricing scope reported, and has 257 GitHub stars.
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