i already developed attendance management system using c# if you need more Detail let me know i can provide more details .. Attendance System. • Auto and Manual download Attendance Data • Employee Master Details • Employee Department, Designation, Category, Section wises Reports • Holiday Maintenance • Leave Types • Leave Entitlement and Management • Maintenance of shifts • Overtime Hours Calculation • No Pay Days Calculation • Late/Early Minutes Calculation • Daily/Monthly Process • Attendance Detailed Reports • Attendance Summery Reports • Absentee Reports • Late Attendance Reports • Over Time Hours Reports • Leave Detailed Reports • Leave Summery Reports • Month End Report