Use the LongURL API to expand shortened URLs from TinyURL, etc. Submit a shortened URL and then get its long equivalent returned. You can also use the API to get a list of known shortening services along with the domains they use (or view the main site's home page for a list, too). If you use the JSON return format, you can also identify an optional callback function.
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.