ERPNext is an open source ERP system with various modules including HR. The HR module manages employee records, attendance, payroll, and recruitment. It allows creating employee profiles, tracking attendance, processing payroll with salary structures and components, and managing the recruitment process with job openings, applicants, and offer letters. The presentation provided an overview of the ERPNext system and focused on demonstrating the key features and capabilities of the HR module for managing human resources and personnel functions.