The Aerospike PHP SDK by Aerospike can access NoSQL databases features from an indirect interface. Reference includes class, configuration, lifecycle, error handling, key-value methods, and administrator.
The Federal Register is touted as "The Daily Journal Of The United States Government". Its website, federalregister.gov, allows access to the documents published there, which include proposed rules, final rules, public notices, and Presidential actions. It's a pretty interesting and useful look into what the US Government is doing, and how it might affect your life. Amazingly enough, it has a full-featured API, which is a truly open source project, to allow access to the Federal Register within applications.