InvoiceNinja stands out as the best open source alternative to Quickbooks. If it doesn’t meet your needs, don’t worry, — we’ve put together a ranked list of other open source Quickbooks alternatives to help you find the right fit.
Quickbooks alternatives are mainly Finance. Browse these if you want a narrower list of alternatives or looking for a specific functionality of Quickbooks.
A comprehensive invoicing and time-tracking platform tailored for freelancers and small to mid-sized businesses.

Invoice Ninja is a versatile invoicing and accounting platform for freelancers, small businesses, and teams. It offers unlimited invoices, quotes, expenses, time tracking, and more—complete with both cloud-hosted and self-hosted options—making it ideal for managing billing and finances efficiently.
Key benefits of Invoice Ninja include:
Unlimited Invoicing & Quotes: Create and send unlimited invoices and quotes with live PDF previews and customizable branding.
Automated & Recurring Payments: Set up recurring invoices with auto-billing via Stripe, PayPal, and other gateways; send timely reminders when invoices are viewed or due.
Projects, Time & Expense Tracking: Manage projects, track billable hours, record expenses, and convert tasks into invoices with one click.
Multi-Currency & Client Portal: Support international clients with multiple currencies/languages and provide a self-service portal for viewing invoices and payments.
Self-Hosted & Open Source: Choose full control with self-hosted deployment (Docker, Laravel, Flutter) or use the cloud version—with extensions for branding, team access, and payment compliance.
A powerful photo editing and illustration tool that enables users to transform images, remove unwanted elements with a click, and create photorealistic results using generative fill tools.
A web analytics service offered by Google that tracks and reports website traffic, providing insights into user behavior.
An all-in-one workspace for notes, tasks, databases, project management, knowledge sharing, and team collaboration, blending flexibility with organization to streamline your workflow.
Google’s mobile and web app development platform that helps developers build apps and games that users will love.
A customer service platform that combines live chat, messaging, and AI-powered support tools. It helps businesses manage customer interactions, automate responses, and improve support efficiency across channels.
A centralized collaboration platform that connects the right people, resources, and tools to streamline teamwork and achieve goals effectively within organizations or teams.