Yes, we do! All Toggl Track users are welcome to use the public API to create their own Toggl Track implementations. Using the API doesn't require a paid plan. Detailed API documentation is available on GitHub. 

Along with the API, you're welcome to contribute to Toggl Track's open-source projects. We will review your contribution and merge it with master if it meets our standards. 

Open-source Toggl Track clients

Toggl Track also supports webhooks, more here.

If you need any more information about our API, you can contact our support team via email. :) 

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