These are some useful php scripts for project management system ( billing, accountant, inventory, hospital etc.)
Accountant - Store Accounting System
Cashflow Accounting & Bookkeeping Software
Cnc Accounting and Product Management
You can check customer control, product control, paying control easily.
BACS - Billing Accounting And CRM Software
Ledger - Book Keeping Accounting Software

Ledger is most wanted book keeping or accounting software which you can handle every business transactions in a single system.
Project Manager With Billing Accounting CRM PRO
Tricky money Management 1.2
Tricky Money Management is most easy Web based accounting system.
Inventory System - Inventory Management Software
Project Box - Team Management Tool
Lead Tracker Manager
Lead Tracker Manager is a very simple to use program that keep track of all your leads, contacts and accounts.
Bayanno Hospital Management System
Freelancy - Ultimate Freelance Management
Tasked PHP Task Management
Gym / Fitness Club Management and Administration
Gym management system is an easy-to-use gym and health club membership management system.
PHIMS
PHIMS (Parexons Hospital Management Information System) is a complete Hospital/Medical Centre automation solution covering all of the processes Hospital .
clientResponse Responsive PHP Client Management
RISE - Ultimate Project Manager
Ultimate Project Manager CRM PRO
