eBay4R is a Ruby wrapper for eBay's Web Services SOAP API. Has ease of use and small footprint. Instead of 40-50 line examples eBay gives you in C# and Java, with Ruby and eBay4R, examples are 5 lines or less.
The trouble with building mobile computing applications is that end users have little tolerance when it comes to how they expect those applications to behave. Never mind the fact that mobile applications are amongst some of the most challenging to create; the second somebody has a less than optimal experience they're off to another application. Needless to say, that puts a lot of pressure on mobile application developers.
Apigee, the API company, recently announced the launch of a new API Management Solution optimized for software-defined networking (SDN) environments. Apigee's API Management for the Software-Defined Network (SDN), provides the tools required to "build, manage and scale applications for the programmable datacenter."