Alternatives

Products that do what BillingEngine does

Usage-based billing for APIs — real-time rating

1
Lotus▲520
Open-source pricing & billing
2023
2
Easybilling▲91
AI-native billing & payments for usage-based AI products
Jun 2026
3
Metering.ai▲302
Automated metering and billing for usage based pricing
2023
4
Stripe Billing▲1,027
Billing and subscriptions for fast-growing businesses
2018 · stripe.com
5
Amberflo▲157
Cloud metering and usage-based pricing and billing for SaaS
2022
6
Paigo▲267
Automate billing for any pricing, 0% transaction fee forever
2023
7
Lago▲1,013
Open-source alternative to Stripe Billing and Chargebee
2023 · getlago.com
8
Paritydeals▲341
Flexible billing for AI & SaaS
Oct 2025
9
Flexprice▲240
Usage-based pricing and metering for developers
2025
10
Billing SDK▲530
Open source billing UI components
2025
11
Kable▲194
Usage-based billing for API products
2022
12
Schematic▲392
Ship pricing faster: usage based billing & customer portals
2025
13
MCP-Billing▲112
OAuth 2.1 + usage-based Stripe billing for MCP servers
Jul 2026 · mcp-billing.com
14
Octane Billing▲173
Easily price on usage, SaaS billing without headaches
2021
15
Pricing Maker▲418
AI Pricing Generator for your Product or SaaS
2024
16
Rainex▲687
Your ideal billing and subscription management system
2024
17LO
Lotus – Open source pricing and packaging infrastructure▲120
Hi HN! We’re building an open-source pricing & packaging engine for SaaS with a built-in billing system. (https://github.com/uselotus/lotus). We strongly believe pricing is the largest untapped growth lever for SaaS, primarily because pricing affects so many critical systems that don’t talk to each other (billing, payments, feature limits, metering, and CRM). We’re building this infrastructure to fix this and enable quick experimentation. Lotus acts as a central repository for all of your pricing plans and utilizes your payment gateway, to manage usage-based, per-seat,…
2022 · github.com
18
Billingrails Sandbox▲111
Build a custom billing system in minutes with just config
2025
19
Tiers▲173
Pricing page builder for Stripe Billing
2018
20PE
PuBilling – Embeddable billing portal for your SaaS app▲59
2018 · pubilling.io
21LO
Lotus – open-source pricing engine▲14
Hey HN! We discovered that no one innovates on pricing because every billing software is inflexible. Excited to share our progress with Lotus entering beta (full MIT license, https://github.com/uselotus/lotus). New features: * backtest and run analysis comparing multiple plans * version pricing plans like you version code * Meter and aggregate usage flexibly with custom SQL * billing for usage-based pricing, hybrid, bespoke contracts * generate invoice pdfs or integrate with Stripe, Braintree, Netsuite, Salesforce * webhooks to send alerts when usage thresholds are high…
2023 · demo.uselotus.io
22FO
Flexprice: Open-Source Usage-Based Billing Toolkit▲7
Hey HN, I’am Koshima, co-founder of Flexprice (https://flexprice.io/). Flexprice is an open source monetization platform for AI & Agentic companies. You can build usage-based, credit-based, or hybrid pricing models with full control. Usage-based billing works on paper, but breaks fast in production: (1) High-volume data (e.g., 10k API calls/sec from AI inferences) breaks naive pipelines, dropping events and causing underbilling or customer complaints. (2) Backfilling missing events or retroactive discounts screws up invoices, forcing 3 AM log stitching to avoid revenue…
2025
23
Servicebot for Stripe Billing▲101
The easiest and fastest way to launch with Stripe Billing
2019
24
Credyt▲100
Real-time billing built for AI
Nov 2025

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