Invoice Ninja is a free, open-source solution for invoicing and billing customers. With Invoice Ninja, you can easily build and send beautiful invoices from any device that has access to the web.
InvoicePlane is a self-hosted open source application for managing your quotes, invoices, clients and payments. The application comes with various options, templates and settings to customize your invoicing experience.
Hectic is a single digital workspace with all the tools needed to start, manage and grow a freelancing business, with a built-in personalized community to help freelancers connect with others, develop and refine their craft and get help from experts.
EZ Billing & Invoices offers a simple and easy to use online invoicing system to allow you to manage online your invoices, estimates, quotes, billing, income, expenses and more.
Popular Web app for Project Tracking. SMART ADMIN is Customizable for any Geography, Tax Structure, and Industry. Integrated with Time sheet, Payroll and Invoice. Promotional package has been priced for $49 per year for 6 users with 6 projects.