01
Flexprice
Usage-based pricing and billing for developers 🔓 Cloud or self-hosted ⚙️ No-code UI 💰 Realtime usage metering 🎟 Credits & top-ups 🔑 Control feature access
Health92
Shipping98
Score96
Confidence100
Stars3.7k
ModeSource-visible project
Subscription Billing
Alternatives to REMP
Compare healthier or more active tools in the same use case using ToolVitals public evidence.
Why compare
Signals behind this alternatives page
- REMP currently shows at least one risk or watch signal in ToolVitals data.
- The tool is still alive, but signs of slower momentum are visible.
- Health score: 73/100.
- Shipping score: 41/100.
Switching guide
Best alternatives by need
Healthier optionsFlexprice, OpenMeter, FOSSBilling, Paid Memberships Pro
Stronger current public-health signal than REMP.
Verified open/source-visibleFlexprice, OpenMeter, FOSSBilling, Lago
Useful when portability and inspectability matter.
License unknown, source-visible signalsPaid Memberships Pro
Public source signals exist, but ToolVitals has not verified the license class.
Ranked alternatives
Best-fit subscription billing options
Active
02
OpenMeter
Metering and Billing for AI, API and DevOps. Collect and aggregate millions of usage events in real-time and enable usage-based billing.
Health85
Shipping87
Score90
Confidence100
Stars2.2k
ModeSource-visible project
03
FOSSBilling
Empower your hosting business with FOSSBilling, the free and open-source solution for efficient billing and client management.
Health90
Shipping90
Score92
Confidence96
Stars1.7k
ModeSource-visible project
04
Paid Memberships Pro
The Trusted Membership Platform That Grows with You: Restrict access to content and charge recurring subscriptions using Stripe, PayPal, and more. Fully open source. 100% GPL.
Health88
Shipping92
Score92
Confidence99
Stars527
ModeSource-visible project
05
Lago
Open Source Metering and Usage Based Billing API ⭐️ Consumption tracking, Subscription management, Pricing iterations, Payment orchestration & Revenue analytics
Health96
Shipping71
Score89
Confidence100
Stars10.3k
ModeSource-visible project
06
AI Billing
Billing layer for Vercel AI SDK applications.
Health81
Shipping78
Score85
Confidence100
Stars3
ModeLibrary / Framework
07
Autumn
Autumn is an open-source pricing & billing platform
Health77
Shipping69
Score80
Confidence100
Stars2.6k
ModeSource-visible project
08
PayKit
The billing framework for TypeScript. Code-first products, handles Stripe, webhooks, and usage state, runs in your app.
Health76
Shipping71
Score81
Confidence100
Stars1k
ModeSource-visible project
09
Ubilling
Open-source billing system for ISP and network service management.
Health80
Shipping72
Score82
Confidence94
Stars180
ModeSource-visible project
10
Billmora
Open-source billing management with recurring automation and provisioning.
Health72
Shipping83
Score81
Confidence89
Stars10
ModeSource-visible project
11
Kill Bill
Open-Source Subscription Billing & Payments Platform
Health78
Shipping61
Score78
Confidence100
Stars5.6k
ModeSource-visible project
12
BillRun
Open source billing and fraud detection system.
Health77
Shipping69
Score78
Confidence84
Stars127
ModeSource-visible project