From their site: BibSonomy is a system for sharing bookmarks and lists of literature. BibSonomy provides a web service using REST. You can use the provided client library, written in Java, to access the API or you can directly interact with the web service if you would like to write a client in a language other than Java.
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.