An open source web application meant to help manage & create invoices in a simple, straightforward way.
Cost / License
- Free
- Open Source
Platforms
- Online

Duet is described as 'Project management and invoicing for freelancers and small businesses. DuetApp is a PHP application you can run on your server, VPS, or desktop/laptop' and is a project management tool in the business & commerce category. There are more than 50 alternatives to Duet for a variety of platforms, including Web-based, Mac, iPhone, Android and iPad apps. The best Duet alternative is Trello, which is free. Other great apps like Duet are Odoo, ClickUp, Basecamp and Zenkit.
An open source web application meant to help manage & create invoices in a simple, straightforward way.

My Renovation is a convenient tool to manage workers and processes on total renovation and housing improvements. You can manage the process of current and future works despite your experience. Key stages are already listed.




Online invoicing, client management, and time tracking web application for freelance, creative professionals, and small businesses.




MyBusinessGenie is a mobile & online business management software for small businesses within home services & event services industry that allows various vendors to manage leads, projects, contacts, calendar, catalog & more.




Invoicer is a free, native Mac app designed for freelancers who need a fast, offline-friendly way to create and manage professional invoices. It focuses on a clean macOS experience, making it easy to stay organized across clients, services, and business profiles.




CoManage was developed for everybody who wants to manage his organization efficiently, but doesn’t like to do the administrative part. With CoManage you have access to a set of useful online tools that are essential to do your daily administrative tasks in an effective and...




Your growing business needs support, but your profit margins are slim. You need help that makes your work life easier — not complicated solutions that take more time to manage than the work that brings you revenue. You need Solo Hustle.




A central place for your freelancing life. Small businesses, we love you.
Get your projects finished, shipped and billed. Stay organised and in control. Simple freelancing workstation with cash flow, file sharing, invoices, notes and tasks.
For freelancers, entrepreneurs and p.



Get paid faster with Invoice Maker & bill generator, the perfect app for small business owners, freelancers, and entrepreneurs looking to streamline their invoicing process. With our app, you can easily create professional invoices and send them to your clients in just a few...




Best billing software for small businesses and mid-sized firms allows creating professional and beautiful invoices with additional features-expenses, profit & loss and online payment.

Build better eCommerce & business applications with the open-source Scipio ERP framework. From Accounting to Warehouse Management: a long list of business applications is available to you and waiting to be customized.



