GCBS-3 is part of ESSENTRA, which is a suite of software tools developed by ESSENTRA Software Solutions for Windows systems. It is a fully-featured system for the management of contact information, customer relations and billing for small businesses. It provides a secure, multi-language environment for managing customer relationships, billing and contact information. GCBS-3 is designed to assist small business owners in managing their businesses more efficiently and effectively. It enables them to track customer information, including contact information, accounts, invoices and payment histories. It also allows for comparative reporting, personalizations and reminders, providing detailed and up-to-date information on the status of customer relations. In addition, GCBS-3 also provides a range of other features, such as integration with popular online payment processing systems and reporting.