Celoxis is an enterprise-grade project management platform with built-in time tracking. It unites scheduling, resource planning, timesheets, billing, and reporting in one system. Users log hours at the task level (with web or mobile timers), and these hours automatically update project schedules and budgets. Managers can set up approval workflows for timesheets, distinguish billable vs. non-billable hours, and generate real-time utilization and profit reports.