OrangeHRM - Free and Open source HR Software with an array of HR Modules. Personal Information management, Leave Management, Time & Attendance, Performance, Recruitment, On-Boarding and many more.

AttendanceBot - Time & attendance tracking for distributed teams

Calamari - Calamari helps organizations, companies, and enterprises to manage their human resources in an easy and compliant way by delivering modern and easy-to-use time tracking and attendance management tools.

Clockify - Simple and free time tracker. Perfect for small and mid-sized businesses as well as freelancers. Unlimited projects and users, unlimited productivity. Get all the premium functionalities, completely free.

LeaveBoard - LeaveBoard manages employee absences and time off requests with a very simple and intuitive way for companies. Automatise the attendance management for multiple teams and absence types.

Attendink - A minimalist attendance tracking tool