Choosing a subscription billing tool is difficult because the options cover different jobs, from developer-focused usage metering to hosting billing and client management. ToolVitals’ August 2026 data provides a common set of scores while retaining each tool’s stated focus.
The ranking includes open/source-visible tools and sorts them by ToolVitals score descending, using health and shipping for equal composite scores. GitHub stars provide context only and do not determine the order.
Rankings
| Rank | Tool | Openness | License | Health | Shipping | GitHub Stars | Score | Status |
|---|---|---|---|---|---|---|---|---|
| 1 | Flexprice | OSI-approved OSS | AGPL-3.0 | 97 | 98 | 4453 | 98 | 🟢 Excellent |
| 2 | OpenMeter | OSI-approved OSS | Apache-2.0 | 96 | 97 | 2233 | 96 | 🟢 Excellent |
| 3 | FOSSBilling | OSI-approved OSS | Apache-2.0 | 96 | 96 | 1679 | 96 | 🟢 Excellent |
| 4 | Panelica | OSI-approved OSS | MIT | 93 | 94 | 45 | 94 | 🟢 Excellent |
| 5 | Billmora | OSI-approved OSS | MIT | 92 | 92 | 14 | 92 | 🟢 Excellent |
| 6 | Kill Bill | OSI-approved OSS | Apache-2.0 | 92 | 92 | 5706 | 92 | 🟢 Excellent |
| 7 | Autumn | OSI-approved OSS | Apache-2.0 | 93 | 89 | 2654 | 91 | 🟢 Excellent |
| 8 | Ubilling | OSI-approved OSS | GPL-2.0 | 90 | 90 | 181 | 90 | 🟢 Excellent |
| 9 | BillRun | OSI-approved OSS | AGPL-3.0 | 91 | 85 | 128 | 89 | 🟢 Excellent |
| 10 | REMP | OSI-approved OSS | MIT | 89 | 86 | 137 | 88 | 🟢 Excellent |
| 11 | dj-stripe | OSI-approved OSS | MIT | 87 | 84 | 1793 | 86 | 🟢 Excellent |
| 12 | Lago | OSI-approved OSS | AGPL-3.0 | 88 | 80 | 10428 | 85 | 🟢 Excellent |
| 13 | Meteroid | OSI-approved OSS | AGPL-3.0 | 86 | 78 | 1225 | 83 | 🟢 Excellent |
| 14 | KeyGate | OSI-approved OSS | AGPL-3.0 | 80 | 73 | 59 | 77 | 🟢 Good |
| 15 | Subkit | OSI-approved OSS | MIT | 74 | 68 | 36 | 72 | 🟢 Good |
| 16 | AI Billing | OSI-approved OSS | Apache-2.0 | 69 | 45 | 3 | 59 | 🟡 Fair |
| 17 | PayKit | OSI-approved OSS | MIT | 52 | 40 | 1042 | 47 | 🟡 Fair |
| 18 | Lotus | OSI-approved OSS | MIT | 52 | 27 | 1833 | 42 | 🟡 Fair |
| 19 | Subscribie | OSI-approved OSS | MPL-2.0 | 46 | 24 | 63 | 37 | 🔴 Needs Attention |
| 20 | Ctrlpanel | OSI-approved OSS | MPL-2.0 | 37 | 5 | 510 | 24 | 🔴 Needs Attention |
| 21 | Faveo Invoicing | OSI-approved OSS | OSL-3.0 | 36 | 4 | 241 | 23 | 🔴 Needs Attention |
| 22 | Usage Credits | OSI-approved OSS | MIT | 29 | 3 | 165 | 19 | 🔴 Needs Attention |
| 23 | Unimeter | OSI-approved OSS | MIT | 20 | 6 | 3 | 14 | 🔴 Needs Attention |
| 24 | NovaBilling | OSI-approved OSS | AGPL-3.0 | 16 | 0 | 4 | 10 | 🔴 Needs Attention |
| 25 | Bill Flow | OSI-approved OSS | MIT | 2 | 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 stated focus is 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 control. Its labels are OSI-approved OSS and AGPL-3.0.
OpenMeter ranks second with a ToolVitals score of 96, a health score of 96, and a shipping score of 97. It focuses on metering and billing for AI, API, and DevOps use cases, with support for collecting and aggregating millions of usage events in real time to enable usage-based billing. Its labels are OSI-approved OSS and Apache-2.0.
FOSSBilling ranks third with a ToolVitals score of 96, a health score of 96, and a shipping score of 96. Its stated focus is helping hosting businesses manage billing and clients through a free and open-source solution. Its labels are OSI-approved OSS and Apache-2.0.
Want to see the full health, license, shipping, and confidence details for every tool in Subscription Billing? Browse all Subscription Billing Tools →