Categories / Invoicing & Finance

Open Source Invoicing & Finance Apps

Discover the top open source Invoicing & Finance software to manage billing, expenses, payments, and accounting. Take control of your finances!

27 apps available

Apps in Invoicing & Finance

PHP
86%
AGPL 3.0

Kimai

Invoicing Finance · Project Management

4,996

Professional open-source time tracking with invoicing, multi-user support, SAML/LDAP auth, and a full REST API—self-host it or use the cloud.

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94
Repo Health
78
Technical
64
Dependency
Built with
PHP 86%
Updated 1 weeks ago
TypeScript
76%
AGPL 3.0

Ghostfolio

Invoicing Finance

9,298

Track your stocks, ETFs, and crypto with a privacy-first, self-hostable wealth management platform built for data-driven investors.

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93
Repo Health
79
Technical
67
Dependency
Built with
TypeScript 76%
HTML 21%
Updated 1 weeks ago
TypeScript
97%
AGPL 3.0

Bigcapital

Invoicing Finance

3,893

Self-hostable double-entry accounting platform with invoicing, inventory, multi-currency, and real-time financial reporting for small and medium businesses.

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91
Repo Health
77
Technical
61
Dependency
Built with
TypeScript 97%
Updated 1 weeks ago
Go
91%
AGPL 3.0

Lago

Ecommerce · Invoicing Finance

10,552

Open-source metering, billing, and revenue infrastructure for product-led companies that need complete control over their pricing stack.

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89
Repo Health
81
Technical
76
Dependency
Built with
Go 91%
Updated 1 weeks ago
TypeScript
58%
AGPL 3.0

Frappe Books

Invoicing Finance

4,955

Offline desktop accounting with double-entry, POS, and custom invoice templates

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88
Repo Health
77
Technical
73
Dependency
Built with
TypeScript 58%
Vue 39%
Updated 2 weeks ago
PHP
45%
AGPL 3.0

solidtime

Invoicing Finance · Productivity

8,924

Modern open-source time tracker for freelancers and agencies with invoicing, multi-org support, and Toggl/Clockify migration built in.

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84
Repo Health
81
Technical
70
Dependency
Built with
PHP 45%
TypeScript 30%
Vue 23%
Updated 1 weeks ago
PHP
48%
AGPL 3.0

Crater

Invoicing Finance

8,347

Open source invoicing and billing platform for freelancers and small businesses — create estimates, track expenses, accept Stripe payments, and run recurring invoices from your own server.

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54
Repo Health
68
Technical
69
Dependency
Built with
PHP 48%
Vue 40%
Updated 2 years ago
TypeScript
96%
AGPL 3.0

Midday

Invoicing Finance · Productivity

15,000

All-in-one AI-powered business operations platform for freelancers and solo entrepreneurs to manage invoicing, time tracking, banking, and financial intelligence.

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53
Repo Health
78
Technical
67
Dependency
Built with
TypeScript 96%
Updated 3 months ago
Ruby
70%
AGPL 3.0

Maybe

Authentication · Databases · Invoicing Finance

54,282

Self-hostable personal finance app that gives you full ownership of your financial data with a clean, minimal Rails-powered interface.

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52
Repo Health
82
Technical
0
Dependency
Built with
Ruby 70%
HTML 23%
Updated 1 years ago

About Invoicing & Finance

Managing finances effectively is crucial for any individual or organization. Open source Invoicing & Finance software provides a range of tools to streamline these processes, offering control and transparency over monetary operations. These solutions often include features like invoice creation, expense tracking, payment processing, and financial reporting.

The functionality within this category is diverse. Common capabilities include:

  • Invoice Generation: Creating professional invoices with customizable templates and branding.
  • Expense Management: Tracking business expenses, categorizing costs, and generating expense reports.
  • Payment Processing: Integrating with payment gateways to accept online payments securely.
  • Financial Reporting: Generating key financial statements like profit and loss statements, balance sheets, and cash flow reports.
  • Budgeting: Tools for creating and managing budgets to control spending.
  • Tax Calculation & Reporting: Automating tax calculations and preparing reports for filing purposes.

The value proposition of open source Invoicing & Finance software is significant. Users gain greater control over their data, reduce reliance on proprietary systems, and avoid vendor lock-in. These applications are often customizable to fit specific business needs and can integrate with other open source tools for a comprehensive solution. They empower teams to automate repetitive tasks, improve accuracy in financial records, and ultimately make better informed business decisions. Businesses can also reduce operational costs by leveraging self-hosted solutions and community support.

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