Best Open Source Finance & Accounting Software
Browse 24 production-ready, self-hostable open-source tools in Finance & Accounting. Eliminate per-seat SaaS costs, retain complete data ownership, and claim $100K+ in startup cloud hosting credits.
Top Open-Source Finance & Accounting Software Compared
Direct overview of top-ranked solutions by community stars and license
| Tool Name | GitHub Stars | License | Replaces Proprietary | Details |
|---|---|---|---|---|
| OpenBB | ★ 75,386 | AGPL-3.0 | Power BI, Bloomberg Terminal | View Stack → |
| ERPNext | ★ 55,465 | GPL-3.0 | SAP, Microsoft Dynamics 365 | View Stack → |
| ezBookkeeping | ★ 54,204 | MIT | YNAB, Monarch Money | View Stack → |
| Crater | ★ 45,638 | AGPL-3.0 | Quickbooks, Stripe | View Stack → |
| Formance | ★ 45,638 | MIT | Stripe, PayPal | View Stack → |
All 24 Finance & Accounting Open Source Tools
Ranked by GitHub community stars & active adoption
OpenBB
AGPL-3.0Connects proprietary, licensed, and public financial data with AI agents in a self-hostable workspace for asset managers, hedge funds, and banks.
ERPNext
GPL-3.0Open-source ERP solution offering modules for accounting, inventory, HR, CRM, and more. Customizable and scalable for businesses of all sizes.
ezBookkeeping
MITA privacy-first personal finance app with two-level accounts, multi-currency support, AI receipt recognition, and broad data import from formats like GnuCash…
Crater
AGPL-3.0Crater offers AI-driven invoicing workflows, payments, and working capital tools to enhance your platform with minimal technical effort.
Formance
MITBuild custom financial flows and integrate with any provider using Formance's agnostic platform
Lago
AGPL-3.0Open-source billing system that handles metering, usage-based pricing, and invoicing at scale. Perfect for AI, cloud, and API companies needing flexible…
Paymenter
MITAutomate subscriptions and manage payments with a flexible, open-source billing system designed specifically for hosting providers.
Autumn
Apache-2.0Simplify Stripe integration for AI startups with 3 functions, 0 webhooks. Build pricing plans in 30 minutes with usage tracking, credits, and feature controls.
Flexprice
AGPL-3.0A flexible billing platform that handles usage-based metering, credit management, and subscription billing, giving developers full control over pricing models.
Hyperswitch
Apache-2.0A unified payment infrastructure that connects multiple payment processors through a single API integration, enabling global payment processing
Meteroid
AGPL-3.0Open-source pricing and billing platform that helps SaaS companies launch, test, and scale complex billing models with ease. Features metering, invoicing, and…
OpenMeter
Apache-2.0Open source billing platform that turns events into revenue with real-time metering, usage limits, and flexible pricing. Integrates with Stripe, CRMs, and…
UniBee
AGPL-3.0Replace expensive billing solutions with open-source software. Automate subscriptions, accept multiple payments including crypto, and gain real-time revenue…
Gumroad
MITA digital marketplace platform where creators can sell digital products, from courses to software, with built-in payment processing and content delivery.
Akaunting
Open SourceSelf-hostable accounting software covering invoicing, expense tracking, cash flow, and client portals. Free to use, available in 50+ languages.
Bigcapital
AGPL-3.0Cloud-based accounting software that streamlines bookkeeping, generates intelligent reports, and offers multi-currency support for efficient financial…
Invoice Ninja
Elastic-2.0Free invoicing software for freelancers and small businesses. Create professional invoices, track expenses, accept online payments, and manage projects…
Polar
Apache-2.0Comprehensive payment solution with built-in tax handling, automated benefits, and seamless integrations for digital product and SaaS businesses.
Midday
AGPL-3.0All-in-one tool for freelancers and small businesses to manage finances, track time, store files, and send invoices efficiently.
Expensify
MITAutomate expense reporting, reimbursements, and corporate card management with real-time data sync and powerful integrations.
Kimai
AGPL-3.0Open-source time tracking solution for businesses of all sizes. Manage projects, track billable hours, and generate insightful reports.
Spliit
MITA user-friendly app for tracking shared expenses, settling debts, and managing group finances with ease and transparency.
Flowglad
Open SourceConnects client data across tools, automates recurring accounting workflows, and maintains a self-updating knowledge base with human approval controls.
Suprascribe
AGPL-3.0Free subscription tracker that automatically scans your email to find recurring charges. Privacy-focused discovery with complete spending overview and…
Frequently Asked Questions: Open Source Finance & Accounting
What are the best open source Finance & Accounting tools in 2026?
The highest-ranked open-source software in Finance & Accounting is OpenBB with over 75,386 GitHub stars. Other leading tools include ERPNext, ezBookkeeping, Crater, Formance. All are vetted for production self-hosting.
Can I self-host Finance & Accounting open source tools on my own cloud?
Yes. Tools listed in this category support self-hosting via Docker, Docker Compose, Kubernetes, or Helm on AWS, Google Cloud, DigitalOcean, Hetzner, or bare metal with zero per-seat licensing fees.
How can early-stage startups get free cloud credits to host Finance & Accounting tools?
Founders can claim up to $100,000 in AWS Activate, $350,000 in Google Cloud for Startups, and $1,000 in DigitalOcean credits via Startupbricks Perks (startupbricks.in/perks) to deploy self-hosted stacks at zero infrastructure cost.
What proprietary SaaS does open source Finance & Accounting software replace?
Open-source tools in this category replace proprietary commercial platforms including Power BI, Bloomberg Terminal, Tableau, Looker, Koyfin, Hebbia, MicroStrategy, SAP, Microsoft Dynamics 365, NetSuite. Switching gives your team 100% data custody, security control, and zero recurring seat costs.
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