Great for time tracking, works the best with Chrome extension plus Android app.
I didn't use all the features available but for my needs it worked out perfectly. Their customer service is very responsive and polite when it comes to inquiries made.
With the TrackingTime Extension for Chrome, Firefox, Safari, and Edge enhance Zendesk with time tracking. Get automatic timesheets and enjoy TrackingTime’s in-depth analytics.
Offers on-demand help desk software, covering customer support, trouble tickets and knowledge base. No install. No worries. Zendesk is a web-based help desk software with an elegant support ticket system and a self-service customer support platform Agile, smart and convenient.
https://www.zendesk.com/