Choosing subscription billing software is difficult because the tools cover different jobs, from developer-focused usage metering to hosting billing and client portals. The October 2026 ToolVitals data provides a current comparison using each tool’s supplied description, ToolVitals score, health score, shipping score, openness label, and license label.
The ranking includes open/source-visible tools and orders them by ToolVitals score descending, with health and shipping used for equal composite scores. GitHub stars provide context only and are not a ranking signal.
Rankings
| Rank | Tool | Openness | License | Health | Shipping | GitHub Stars | Score | Status |
|---|---|---|---|---|---|---|---|---|
| 1 | Flexprice | OSI-approved OSS | AGPL-3.0 | 97 | 97 | 6894 | 97 | 🟢 Excellent |
| 2 | OpenMeter | OSI-approved OSS | Apache-2.0 | 96 | 94 | 2378 | 95 | 🟢 Excellent |
| 3 | Panelica | OSI-approved OSS | MIT | 95 | 95 | 91 | 95 | 🟢 Excellent |
| 4 | FOSSBilling | OSI-approved OSS | Apache-2.0 | 94 | 93 | 1715 | 94 | 🟢 Excellent |
| 5 | Autumn | OSI-approved OSS | Apache-2.0 | 92 | 89 | 2815 | 91 | 🟢 Excellent |
| 6 | Lago | OSI-approved OSS | AGPL-3.0 | 92 | 88 | 10678 | 90 | 🟢 Excellent |
| 7 | Kill Bill | OSI-approved OSS | Apache-2.0 | 91 | 89 | 5791 | 90 | 🟢 Excellent |
| 8 | REMP | OSI-approved OSS | MIT | 90 | 86 | 137 | 88 | 🟢 Excellent |
| 9 | BillRun | OSI-approved OSS | AGPL-3.0 | 90 | 84 | 131 | 88 | 🟢 Excellent |
| 10 | Ubilling | OSI-approved OSS | GPL-2.0 | 88 | 87 | 182 | 88 | 🟢 Excellent |
| 11 | KeyGate | OSI-approved OSS | AGPL-3.0 | 84 | 82 | 105 | 83 | 🟢 Excellent |
| 12 | PayKit | OSI-approved OSS | MIT | 82 | 85 | 1061 | 83 | 🟢 Excellent |
| 13 | Billmora | OSI-approved OSS | MIT | 74 | 73 | 17 | 74 | 🟢 Good |
| 14 | Meteroid | OSI-approved OSS | AGPL-3.0 | 73 | 57 | 1328 | 67 | 🟢 Good |
| 15 | Subkit | OSI-approved OSS | MIT | 71 | 59 | 37 | 66 | 🟢 Good |
| 16 | AI Billing | OSI-approved OSS | Apache-2.0 | 70 | 45 | 3 | 60 | 🟢 Good |
| 17 | dj-stripe | OSI-approved OSS | MIT | 58 | 34 | 1794 | 48 | 🟡 Fair |
| 18 | Lotus | OSI-approved OSS | MIT | 48 | 14 | 1840 | 35 | 🔴 Needs Attention |
| 19 | Subscribie | OSI-approved OSS | MPL-2.0 | 45 | 21 | 63 | 35 | 🔴 Needs Attention |
| 20 | NovaBilling | OSI-approved OSS | AGPL-3.0 | 38 | 13 | 4 | 28 | 🔴 Needs Attention |
| 21 | Faveo Invoicing | OSI-approved OSS | OSL-3.0 | 36 | 2 | 243 | 22 | 🔴 Needs Attention |
| 22 | Ctrlpanel | OSI-approved OSS | MPL-2.0 | 34 | 3 | 507 | 22 | 🔴 Needs Attention |
| 23 | Usage Credits | OSI-approved OSS | MIT | 33 | 2 | 166 | 20 | 🔴 Needs Attention |
| 24 | Unimeter | OSI-approved OSS | MIT | 14 | 4 | 3 | 10 | 🔴 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 | 0 | 🔴 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 97, plus health and shipping scores of 97. Its supplied description covers usage-based pricing and billing for developers, cloud or self-hosted deployment, a no-code UI, real-time usage metering, credits and top-ups, and feature-access controls. ToolVitals labels its openness as OSI-approved OSS and its license as AGPL-3.0.
OpenMeter ranks second with a ToolVitals score of 95, a health score of 96, and a shipping score of 94. It focuses on metering and billing for AI, API, and DevOps workloads, including real-time collection and aggregation of millions of usage events for usage-based billing. Its openness label is OSI-approved OSS and its license label is Apache-2.0.
Panelica ranks third with a ToolVitals score of 95, alongside health and shipping scores of 95. Its supplied description presents a self-hosted hosting-billing and client-portal alternative to WHMCS, built with Laravel 13 and MySQL, with invoicing, domains, SSL, tickets, reseller features, 30 locales, and 15 themes. ToolVitals labels its openness as OSI-approved OSS and its license as MIT.
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