Smartsheet is an online project management company that provides an SDK for Salesforce.com, a cloud based CRM enterprise. The site displays links to access source code and documents on Github and to download an unmanaged package. When users visit Github, they will notice that the Apex Toolkit offers a class library that interacts with the Smartsheet API. This API supports a REST interface to Smartsheet data. In addition, when users install the package, they will note that signup is required to connect with Salesforce.com.
San Francisco startup Prior Knowledge recently released in public beta their predictive analytics API called Veritable. They want to enable every developer with big data prediction tools, without becoming a quant genius first. Just upload a dataset, execute analysis, make predictions and watch the sparks fly.
FinancialForce.com, focused on building cloud based business applications on the Force.com platform, has released an API for its accounting application (i.e. The FinancialForce Accounting API). The API gives access to the entire suite of accounting tools available through the accounting platform (e.g. cash management, reporting and dashboards, ordering and billing, etc.). Although FinancialForce.com built the application with Force.com, and the target audience began with Force.com developers, the application has been integrated with many platforms and APIs (e.g. Google Apps, Basecamp, Facebook, PayPal, etc.)