Tag
12 catalogue entries use this topic; each Project's license policy is labeled separately.
Open-source usage-based billing with metering, invoicing, and entitlements
Lago is an open-source billing platform for usage-based, subscription, and hybrid pricing, with metering, invoicing, and payment orchestration behind one API.
Open-source billing platform and merchant of record for SaaS
Polar is an open-source billing platform and merchant of record for digital products and SaaS, combining usage billing, subscriptions, and global tax handling.
Self-hosted invoicing and billing with quotes, payments, and time tracking
Invoice Ninja is a self-hosted invoicing and billing app for freelancers and small businesses, covering quotes, invoices, online payments, and time tracking.
Self-hosted accounting software for invoices, expenses, and cash flow
Akaunting is a self-hosted accounting app for small businesses and freelancers that tracks income, expenses, and cash flow from a web browser.
Open-source usage-based billing with metering, credits, and invoicing
Flexprice is an open-source billing platform for usage-based, credit-based, and hybrid pricing, with real-time metering and automated invoicing.
Open source API key management with auth and rate limiting
Unkey is an open source developer platform for issuing, verifying, and revoking API keys with authentication, rate limiting, and usage-based billing.
Open-source billing layer that sits on top of Stripe
Autumn is a billing layer that sits between a product and Stripe. Plans, prices, entitlements, and usage metering are defined in Autumn, while payment processing and subscription records stay inside Stripe, so teams keep their existing Stripe setup instead of migrating off it.
Self-hosted open-source billing and invoicing for hosting providers
Paymenter is a self-hosted open-source billing platform for hosting providers, automating subscriptions, invoicing, and service provisioning.
Open-source usage metering and billing for AI and API products
OpenMeter is an open-source usage-metering and billing platform for AI and API products, turning CloudEvents usage data into entitlements, Stripe invoices, and credit grants.
Open-source usage-based billing with metering, plans, and invoicing
Meteroid is an open-source pricing and billing platform for SaaS, infrastructure, and AI companies, combining usage metering, plan management, subscriptions, and invoicing behind one API.
Private offline time tracking for macOS and Windows
TimeScribe is a free, open-source time tracker for macOS and Windows that keeps every entry on the device with no account, cloud, or paywall.
Open-source subscription billing with metering, invoicing, and multi-gateway support
UniBee is an open-source billing platform for SaaS subscriptions and usage-based metering, with automated invoicing, dunning, and Stripe and PayPal gateways.