Meteroid: Open Source Finance & Accounting

What is Meteroid?

Meteroid is an open-source, cloud-native pricing and billing platform for SaaS, infrastructure, and AI companies that want usage-based, hybrid, or otherwise complex pricing without building and maintaining a billing system of their own.

What it is

Meteroid is a Rust-based pricing and billing platform that sits in the modern data stack. It integrates with existing systems through an API, collects data about customer usage and interactions, and feeds that data into a billing engine that applies custom pricing models to produce accurate, timely invoices. Metering data is stored in ClickHouse, and the ingestion path is written in Rust for high-throughput handling at scale.

The concrete problem it addresses is the gap between what a customer actually consumes and what that customer is invoiced for. Traditional billing systems handle flat subscriptions competently but become awkward once a business moves to usage-based pricing or product-led growth. Meteroid replaces the billing infrastructure that engineering teams would otherwise build and maintain in-house, along with the rigid traditional systems that surround it, so that flat rate, usage-based, tiered, and hybrid plans can all be modelled without engineering effort. Plans are versioned, which means pricing changes and grandfathering of existing customers are handled explicitly rather than patched in later.

Key capabilities

Usage metering that transforms raw usage events such as API requests, tokens, transactions, and storage into accurate billable metrics in real time, without pre-aggregation.
Pricing and billing for flat rate, usage-based, tiered, or hybrid structures, with versioned plans so that pricing changes never affect existing customers unless that outcome is intended.
Subscription lifecycle control and quotes (CPQ): upgrades, downgrades, mid-cycle changes, and cancellations, plus quotes that create a subscription and start billing automatically once signed.
Invoicing and credit notes that generate detailed invoices for simple charges as well as complex usage-based and hybrid billing, and issue credit notes when corrections are required.
Entitlements that control what each customer can access, use, or consume, ranging from simple feature access to metered usage limits.
Trials, coupons, and add-ons, so subscriptions can carry trial periods and promotional coupons, and customers can unlock additional capabilities without switching plans.
Integrations with CRM, accounting, and payments tools, alongside customer management and a self-serve portal where customers handle their own account.

Who uses it and how

Engineering teams that have already carried the cost of building and maintaining a billing system from scratch and do not want to repeat it.
Product-led teams that need usage-based, complex, or hybrid pricing from day one without standing up custom billing infrastructure.
Sales-led teams that close custom deals, automate quote-to-cash, and keep finance aligned without manual handovers between sales and billing.
Organizations running product-led and sales-led motions simultaneously, using Meteroid as a single source of truth for monetization across both.
Teams that would rather not run infrastructure can use Meteroid Cloud, a free hosted workspace that requires no credit card.

Getting started

The README points to a hosted option first: a free Meteroid Cloud workspace at app.meteroid.com/registration, ready in seconds. Self-hosting and API integration details live in the documentation at docs.meteroid.com.

How it compares

The facts provided name no comparable tools and no list of paid products that Meteroid replaces, so it stands alone in this registry. Its stated differentiators are an AGPL-3.0 licence, a Rust ingestion path backed by ClickHouse, and a choice between self-hosting and a free hosted workspace. No head-to-head comparison against commercial billing vendors can be drawn from the material available here.

When to use it — and when not to

A self-hoster takes on operating the platform itself, including ClickHouse as the metering store and the API integration layer, so teams without that operational appetite should use Meteroid Cloud or look elsewhere. The README excerpt describes deployment only briefly, and the Insights and Reporting capability is still marked as coming soon, so teams that need mature revenue analytics immediately will not find them here yet. The project carries 33 open issues and ships under AGPL-3.0, a copyleft licence that some organizations will not accept.

project readme (upstream, from github) — read inline

Cloud-native pricing and billing platform for SaaS, Infrastructure, and AI companies 🔥.

Meteroid addresses the complexities and limitations of traditional billing systems, particularly for businesses transitioning to usage-based models or product-led-growth principles. It eliminates the gap between customer usage and billing, ensuring accuracy and transparency.

We'd love your support or contribution! Leave a star ⭐ and join our Discord!

💡 Just want to try it? Skip the setup and spin up a free workspace on Meteroid Cloud — ready in seconds, no credit card.

Talk to us !

How It Works

Meteroid integrates with your existing systems via a simple API, collecting data on customer usage and interactions. This data fuels the Meteroid billing engine, applying your custom pricing models to generate accurate, timely invoices.

Our platform simplifies the creation, scaling and maintenance of complex billing models, automates invoice generation, and provides clear, actionable insights for achieving your KPIs.

Features

Meteroid is the complete monetization platform for modern SaaS. Key capabilities include:

Usage Metering: Transform raw usage events (API requests, tokens, transactions, storage, and more) into accurate billable metrics in real time, without pre-aggregation. Powered by Rust for high-throughput ingestion at scale.
Pricing & Billing: Model any pricing structure: flat rate, usage-based, tiered, or hybrid, without engineering effort. Plans are versioned, so pricing changes never affect existing customers unless you want them to.
Subscription Management: Create, manage, and update subscriptions with full lifecycle control: upgrades, downgrades, mid-cycle changes, and cancellations.
Quotes (CPQ): Generate and send quotes to close custom deals faster. Once a quote is signed, a subscription is created and billing starts automatically, with no manual handovers.
Invoicing & Credit Notes: Automatically generate accurate, detailed invoices, from simple charges to complex usage-based and hybrid billing. Issue credit notes when corrections are needed.
Entitlements: Control what each customer can access, use, or consume, from simple feature access to metered usage limits.
Trials, Coupons & Add-Ons: Drive conversions with trial periods and promotional coupons. Attach add-ons to subscriptions to let customers unlock additional capabilities without switching plans.
Customer Management & Self-serve Portal: Full visibility into your customer base: subscriptions, payment methods, and usage history. Give customers a self-serve portal so they can manage their own account without contacting support.
Integrations: Connect Meteroid with your existing tools: CRM, accounting, payments, and more.
Insights & Reporting: Monitor your revenue in real time and identify what's driving growth with actionable insights, without waiting for month-end exports. (Coming soon)

For whom ?

Whether you're product-led or sales-led, or running both motions at once, Meteroid is your single source of truth for monetization.

Engineering teams that have been through the pain of building and maintaining a billing system from scratch.
Product-led teams that want to ship usage-based or complex or hybrid pricing from day one, without building custom billing infrastructure.
Sales-led teams that need to close custom deals fast, automate quote-to-cash, and keep finance in sync with no manual handovers between sales and billing.

Build for Sustainable Growth

Our philosophy is deeply rooted in the principles of open source and open startup culture.
We believe in transparency and collaboration as foundational pillars that not only foster innovation but also build trust and community around our mission.

By choosing Rust as our core technology, we leverage its efficiency, reliability, and safety features, ensuring our platform is built on a solid, secure foundation.

Our focus on Product-Led Growth (PLG) reflects our commitment to creating products that drive user acquisition, retention, and expansion through their inherent value and user experience

This approach, combined with our open philosophy, guides us toward creating a more inclusive, sustainable future for the SaaS industries.

Developer Guide

Please refer to the contributing guide for how to install Meteroid from sources.

Deployment

☁️ Just testing? Skip self-hosting entirely — spin up a free workspace on Meteroid Cloud in seconds. No infra to run, no config, no credit card. Come back here when you're ready to self-host in production.

We provide a Docker Compose and a Helm Chart setup for easy self-hosting:

Docker Compose: See docker/deploy (minimal setup for testing/development)
Kubernetes (Helm): See k8s/meteroid

License

Licensed under the AGPL V3 License.
See LICENSE for more information.

For enterprise support, addons or custom licensing options, please contact us.

Contributors ✨

Join us on Discord !

Thanks for the crazy support 💖

Frequently asked questions

Is Meteroid free to use?

Meteroid is open source under the AGPL-3.0 licence. There is no licence fee and no seat count — you can self-host it or, where the project offers one, pay a vendor for a managed version instead.

What does Meteroid do?

Flexible billing infrastructure for modern SaaS

What is Meteroid written in?

Meteroid is primarily written in Rust. Its source is publicly available at https://github.com/meteroid-oss/meteroid, and it has 1,233 GitHub stars.