1. Hotel Management SystemIt refers to the management techniques used in the hotel sector. It includes hotel administration, accounts, billing marketing, housekeeping, front office or front desk, e.g. Hotelogix PMS, Djubo, True Hotel Management, Aatithya HMS etc.2. Payroll Management SystemIt is used by all modern organisations to encompass every employee of the organisation, who receives regular wages or other compensation. All different payment methods are calculated by the payroll software and the appropriate paychecks are issued. This software can also be used for printing or E-mailing the salary slip of employees,e.g. Namely, UltiPro etc.3. HR Management System It refers to the systems and processes at the intersection between Human Resource Management (HRM) and Information Technology (IT). The function of HR department is generally administrative and common in all organisations.e.g. Effective Staff, Cezanne HR etc.4. Attendance System It is an application software designed to track and optimise the presence of a person/student in an organisation/school. Now-a-days, attendance system can be integrated with customer’s existing time/ attendance recording devices like Biometrics/Access cards. Attendance management can be done in two ways as follows:1. Biometric integration2. Manual attendance integratione.g. eTimeTrackLite, Pyramid PTR 4000 etc.5. Billing SystemIt refers to the software that is used to’ perform the billing process. It handles the tracking of labelled products and services delivered to acustomer or set of customers.e.g. Billing Manager, BillingTracker, kBilling etc..