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.
This tutorial by Leo Gonsalves on Techarena51 describes the steps necessary to build a simple database-driven RESTful JSON API with full CRUD capabilities. The tutorial is written for Python 3 using the Flask web framework, providing all of the relevant code and as well as an instruction video.
Google has released a new API for Fusion Tables, a Google Labs app that allows users to import, integrate, analyze, and visualize data in a variety of ways. The new API allows developers to programmatically perform a variety of tasks, including data import and export (more at our Google Fusion Tables API Profile). The API itself is integrated with several other Google APIs, including the Google Maps API and the Google Visualization API. In fact, developers can also leverage App Engine to easily develop data processing and analysis apps that easily integrate with various other Google APIs.