Best Open Source Accounting (2026)
Open-source accounting tools you can self-host. Full control, no subscription fees.
Invoice Ninja
Free open-source invoicing for freelancers
Invoice Ninja is a free, open-source invoicing and billing platform. Offers self-hosted and cloud options with support for recurring invoices, online payments, time tracking, and expense management. Popular with tech-savvy freelancers.
Wave
Free accounting for small businesses
Wave offers completely free accounting and invoicing software for small businesses. Revenue comes from optional paid services like payroll and payments processing. Ideal for solopreneurs and micro-businesses.
Zoho Books
Online accounting software for growing businesses
Zoho Books is part of the Zoho ecosystem offering comprehensive accounting with invoicing, expense tracking, inventory, and project accounting. Competitive pricing and deep integration with 45+ Zoho apps.
QuickBooks Online
Smart money management for small businesses
QuickBooks Online by Intuit is the most popular small business accounting software worldwide. Offers invoicing, expense tracking, tax preparation, payroll, and over 750 integrations. Known for its accountant-friendly ecosystem.
FreshBooks
Accounting software built for owners
FreshBooks is cloud accounting software designed for freelancers and service-based businesses. Excels at invoicing, time tracking, and expense management with an intuitive interface that requires no accounting knowledge.