Free and Open Source Invoicing, Expenses & Time-Tracking
Free Desktop book-keeping software for small-businesses & freelancers
Stripe.net is a sync/async .NET 4.6.1+ client
Laravel Cashier provides an expressive, fluent interface to Stripe
Open Source Metering and Usage Based Billing API
Open Source Openbravo POS convert to Commercial Retail ERP and POS
Free & Open Source Invoice App for Freelancers & Small Businesses
Accounting system for smaller companies written in GnuCobol.
Audio Transcription software for Linux (Vlc) with a foot pedal
Order and Billing system for MSPs
Small Business Appliance
Most Advance online restaurant menu, food delivery system
Accounting & Best Practice Business Administration System
A super simple way to create & send invoices, receive payments online
SmartPOS (Includes->SmartERP distro of Idempiere ERP) is 100% Web
Phoca Cart is e-commerce extension - powerful shopping cart for Joomla
Invoice and office utilities program for customer managment
The Open Source Invoice Management Software
Mutasyon is a script can add customer, products, inventory or invoice
Simple Aplikasi Hotel Management System
Carting Management System
POS,Sale, Invoice, Stock