Readers evaluating subscription billing tools need to compare billing capabilities with project health and shipping activity. This section uses the supplied September 2026 ToolVitals data, including each tool’s description, ToolVitals score, health and shipping scores, openness and license labels, and GitHub star count.
The ranking includes open/source-visible tools and sorts them by ToolVitals score in descending order; health and shipping are the tie-breakers for equal composite scores. GitHub stars provide context only and do not change the ordering.
Rankings
| Rank | Tool | Openness | License | Health | Shipping | GitHub Stars | Score | Status |
|---|---|---|---|---|---|---|---|---|
| 1 | Flexprice | OSI-approved OSS | AGPL-3.0 | 97 | 98 | 6019 | 98 | 🟢 Excellent |
| 2 | OpenMeter | OSI-approved OSS | Apache-2.0 | 96 | 95 | 2327 | 96 | 🟢 Excellent |
| 3 | FOSSBilling | OSI-approved OSS | Apache-2.0 | 96 | 95 | 1704 | 95 | 🟢 Excellent |
| 4 | Panelica | OSI-approved OSS | MIT | 93 | 95 | 57 | 94 | 🟢 Excellent |
| 5 | Autumn | OSI-approved OSS | Apache-2.0 | 92 | 89 | 2681 | 91 | 🟢 Excellent |
| 6 | Ubilling | OSI-approved OSS | GPL-2.0 | 90 | 89 | 182 | 90 | 🟢 Excellent |
| 7 | BillRun | OSI-approved OSS | AGPL-3.0 | 91 | 86 | 131 | 89 | 🟢 Excellent |
| 8 | Lago | OSI-approved OSS | AGPL-3.0 | 90 | 86 | 10590 | 88 | 🟢 Excellent |
| 9 | AI Billing | OSI-approved OSS | Apache-2.0 | 89 | 85 | 3 | 87 | 🟢 Excellent |
| 10 | REMP | OSI-approved OSS | MIT | 89 | 85 | 137 | 87 | 🟢 Excellent |
| 11 | PayKit | OSI-approved OSS | MIT | 86 | 86 | 1057 | 86 | 🟢 Excellent |
| 12 | Billmora | OSI-approved OSS | MIT | 84 | 84 | 15 | 84 | 🟢 Excellent |
| 13 | KeyGate | OSI-approved OSS | AGPL-3.0 | 83 | 76 | 73 | 80 | 🟢 Excellent |
| 14 | Meteroid | OSI-approved OSS | AGPL-3.0 | 81 | 71 | 1235 | 77 | 🟢 Good |
| 15 | dj-stripe | OSI-approved OSS | MIT | 80 | 71 | 1794 | 76 | 🟢 Good |
| 16 | Kill Bill | OSI-approved OSS | Apache-2.0 | 68 | 46 | 5753 | 59 | 🟡 Fair |
| 17 | Subkit | OSI-approved OSS | MIT | 54 | 38 | 37 | 48 | 🟡 Fair |
| 18 | Subscribie | OSI-approved OSS | MPL-2.0 | 50 | 22 | 63 | 39 | 🔴 Needs Attention |
| 19 | NovaBilling | OSI-approved OSS | AGPL-3.0 | 48 | 25 | 4 | 39 | 🔴 Needs Attention |
| 20 | Lotus | OSI-approved OSS | MIT | 47 | 14 | 1838 | 34 | 🔴 Needs Attention |
| 21 | Faveo Invoicing | OSI-approved OSS | OSL-3.0 | 36 | 3 | 243 | 23 | 🔴 Needs Attention |
| 22 | Ctrlpanel | OSI-approved OSS | MPL-2.0 | 34 | 4 | 510 | 22 | 🔴 Needs Attention |
| 23 | Usage Credits | OSI-approved OSS | MIT | 25 | 2 | 166 | 16 | 🔴 Needs Attention |
| 24 | Unimeter | OSI-approved OSS | MIT | 17 | 5 | 3 | 12 | 🔴 Needs Attention |
| 25 | Bill Flow | OSI-approved OSS | MIT | 1 | 0 | 0 | 1 | 🔴 Needs Attention |
| 26 | LibreBill | OSI-approved OSS | GPL-3.0 | 1 | 0 | 2 | 1 | 🔴 Needs Attention |
| 27 | bframeLib | OSI-approved OSS | AGPL-3.0 | 1 | 0 | 10 | 1 | 🔴 Needs Attention |
| 28 | Bilify | OSI-approved OSS | MIT | 0 | 0 | 7 | 0 | 🔴 Needs Attention |
| 29 | ngbilling | OSI-approved OSS | Apache-2.0 | 0 | 0 | 34 | 0 | 🔴 Needs Attention |
Top 3 Highlights
Flexprice ranks first with a ToolVitals score of 98, a health score of 97, and a shipping score of 98. Its supplied description focuses on usage-based pricing and billing for developers, with cloud or self-hosted deployment, a no-code UI, realtime usage metering, credits and top-ups, and feature-access controls. Its openness label is OSI-approved OSS and its license label is AGPL-3.0.
OpenMeter ranks second with a ToolVitals score of 96, a health score of 96, and a shipping score of 95. Its supplied description covers metering and billing for AI, API, and DevOps use cases, including real-time collection and aggregation of millions of usage events and usage-based billing. Its openness label is OSI-approved OSS and its license label is Apache-2.0.
FOSSBilling ranks third with a ToolVitals score of 95, a health score of 96, and a shipping score of 95. Its supplied description is aimed at hosting businesses and presents it as a billing and client-management solution. Its openness label is OSI-approved OSS and its license label is Apache-2.0.
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