Freckle is a RESTful API that allows users to enter billable hours, see which projects and tasks are taking up the most unpaid time, fetch a list of projects, log a time entry and complete a bulk entry import. Responses can be in XML or JSON.
The following is a list of SDKs from our SDK directory that matched your search term. Though your definition of an SDK may differ, in our world, we define SDKs as platform- specific tools for consuming existing APIs of the sort we list in our API directory. For example, the Ruby SDK for consuming the Twitter Ads API. If you think an SDK, API, or other asset is missing from our directory, be sure to check our guidelines for making contributions to ProgrammableWeb.