Unglue.It is a service, currently in alpha, that gives individuals and institutions a place to join together to free ebooks and other types of digital content by paying rights holders to relicense their works under Creative Commons licenses. Among other things this allows out of print books to be made available for consumption in a free and legal manner. Via the web site, users can discover books, add them to a personal wishlist, comment and share. Additionally users can pledge to support a campaign to fund relicensing of works. The API makes some of the data from the site available for developers to integrate into their applications. Full documentation for the REST/JSON API is available upon registration.
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.