[2015 update: You may have noticed this post is pretty old. Here's more up-to-date information about how Zendesk and Harvest work together.]
Time tracking can be an essential need for a help desk. If ticket processing involves actual tasks and work orders carried out, or if customer support contracts are billed on time and material basis.
We're therefore happy to announce that you can now perform time tracking on ticket-level in Zendesk and submit your data directly to time tracking service Harvest. Harvest serves the time tracking and billing needs of thousands of customers from around the world, from freelancers to Fortune 500 companies. Just as Zendesk, Harvest is a monthly subscription service, that you can upgrade/downgrade or cancel at anytime. Without set-up or cancellation fees.