01
OpenMeter
Metering and Billing for AI, API and DevOps. Collect and aggregate millions of usage events in real-time and enable usage-based billing.
Health96
Shipping96
Score96
Confidence90
Stars2.3k
ModeSource-visible project
Subscription Billing
Alternatives to Flexprice
Compare healthier or more active tools in the same use case using ToolVitals public evidence.
Why compare
Signals behind this alternatives page
- Commit continuity, contributor activity, and delivery signals are strong.
- Health score: 97/100.
- Shipping score: 98/100.
Switching guide
Best alternatives by need
Verified open/source-visibleOpenMeter, FOSSBilling, Autumn, Ubilling
Useful when portability and inspectability matter.
Ranked alternatives
Best-fit subscription billing options
Active
02
FOSSBilling
Empower your hosting business with FOSSBilling, the free and open-source solution for efficient billing and client management.
Health96
Shipping95
Score95
Confidence90
Stars1.7k
ModeSource-visible project
03
Autumn
Autumn is an open-source pricing & billing platform
Health92
Shipping89
Score91
Confidence90
Stars2.7k
ModeSource-visible project
04
Ubilling
Open-source billing system for ISP and network service management.
Health90
Shipping90
Score90
Confidence90
Stars182
ModeSource-visible project
05
Panelica
🧾 Open-source WHMCS alternative — self-hosted hosting billing & client portal. Laravel 13 + MySQL. Invoicing, domains, SSL, tickets, reseller, multi-language (30 locales), 15 themes. Free & MIT-licensed.
Health92
Shipping96
Score94
Confidence90
Stars56
ModeSource-visible project
06
AI Billing
Billing layer for Vercel AI SDK applications.
Health91
Shipping89
Score90
Confidence90
Stars3
ModeLibrary / Framework
07
Lago
Open Source Metering and Usage Based Billing API ⭐️ Consumption tracking, Subscription management, Pricing iterations, Payment orchestration & Revenue analytics
Health90
Shipping86
Score88
Confidence90
Stars10.5k
ModeSource-visible project
08
REMP
Open-source tools for publisher engagement and monetization.
Health90
Shipping86
Score88
Confidence90
Stars137
ModeSource-visible project
09
BillRun
Open source billing and fraud detection system.
Health91
Shipping86
Score89
Confidence90
Stars130
ModeSource-visible project
10
Kill Bill
Open-Source Subscription Billing & Payments Platform
Health86
Shipping78
Score83
Confidence90
Stars5.7k
ModeSource-visible project
11
dj-stripe
dj-stripe automatically syncs your Stripe Data to your local database as pre-implemented Django Models allowing you to use the Django ORM, in your code, to work with the data making it easier and faster.
Health81
Shipping72
Score78
Confidence90
Stars1.8k
ModeSource-visible project
12
Meteroid
Open-source Pricing and Billing Infrastructure 🚀 Subscription management, Invoicing, Pricing, Usage-based billing, Cost limiting, Grandfathering, Experiments, Revenue analytics & Actionable insights
Health81
Shipping72
Score78
Confidence90
Stars1.2k
ModeSource-visible project