Open Source Projects tagged "Billing"
A curated collection of the best open source projects tagged "Billing". Each listing includes a website screenshot along with a detailed review of its features.
Free online accounting for small businesses and freelancers
Stars
10,254Last commit
13 hours agoLicense
Unknown
Self-hostable accounting software covering invoicing, expense tracking, cash flow, and client portals. Free to use, available in 50+ languages.
Open Source Alternative to:
Transform complex usage data into accurate, real-time billing
Stars
10,728Last commit
12 hours agoLicense
AGPL-3.0
Open-source billing system that handles metering, usage-based pricing, and invoicing at scale. Perfect for AI, cloud, and API companies needing flexible monetization.
Open Source Alternative to:
Open source metering and billing infrastructure for any pricing model
Stars
6,876Last commit
20 hours agoLicense
AGPL-3.0
A flexible billing platform that handles usage-based metering, credit management, and subscription billing, giving developers full control over pricing models.
Open Source Alternative to:
Comprehensive open-source business management platform
Stars
Stars growing over the last 30 days8,663Last commit
10 hours agoLicense
AGPL-3.0
All-in-one solution for ERP, CRM, HRM, ATS, and project management to streamline your business operations
Open Source Alternative to:
Modular auth, payments, emails, and analytics for your product
Stars
6,882Last commit
12 hours agoLicense
Unknown
Self-hostable platform combining user auth, payments, email, and analytics into modular building blocks that fit around your existing product.
Open Source Alternative to:
Real-time usage metering and billing for AI companies
Stars
Stars growing over the last 30 days2,426Last commit
10 hours agoLicense
Apache-2.0
Open source billing platform that turns events into revenue with real-time metering, usage limits, and flexible pricing. Integrates with Stripe, CRMs, and payment providers.
Open Source Alternative to:
Cross-system automation and knowledge base for accounting firms
Stars
1,722Last commit
6 months agoLicense
Unknown
Connects client data across tools, automates recurring accounting workflows, and maintains a self-updating knowledge base with human approval controls.
Flexible billing infrastructure for modern SaaS
Stars
Stars growing over the last 30 days1,353Last commit
12 hours agoLicense
AGPL-3.0
Open-source pricing and billing platform that helps SaaS companies launch, test, and scale complex billing models with ease. Features metering, invoicing, and real-time data.
Open Source Alternative to:
Transform your time tracking into actionable insights
Stars
927Last commit
1 month agoLicense
GPL-3.0
Advanced time tracking and productivity analytics tool that captures detailed work patterns, generates comprehensive reports, and helps optimize workflow efficiency.
Open Source Alternative to:
InfluxDB – The purpose-built time series platform for high-velocity ingestion and real-time queries at scale.
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