A pure PHP library for reading and writing spreadsheet files
Open Source Point of Sale is a web based point of sale application
Online Accounting Software
A money and currency library for PHP
The base version of NexoPOS, which is a web-Based Point Of Sale (POS)
Easy work with virtual wallet
Simple and elegant invoicing solution
Track and evaluate the performance of your investment portfolio
Firefly III: a personal finances manager
Empower your hosting business with FOSSBilling
Free and Open Source Invoicing, Expenses & Time-Tracking
Open-source, self-hostable personal subscription tracker
Currency exchange rates library
A distributed transaction framework that supports multiple languages
Kimai is a web-based multi-user time-tracking application
Get a grip on your finances
Open source ERP and CRM web software for business
Open Source - Web Based - CRM - Gestione magazzino e Fatture Magazzino
Profesionalna integracja z Krajowym Systemem e-Faktur (KSeF)
Chromis POS, the new evolving face for your point of sale needs
Open Source Openbravo POS convert to Commercial Retail ERP and POS
Java framework for SWIFT [tm] MT (FIN) messaging