The underlying theme for this year’s Android Developer Conference was cross-platform development, with even Intel getting in on the multi-OS targeting party. This was reflected in the vendors at the show today.

For developers looking to deploy to Android and iOS, they have a new option: Darwino. This platform allows developers to build applications that run in both the browser and on mobile devices. Darwino also includes a relational data store so that applications can be backed by the corporate info employees so desperately need access to in the field.

(Related: Google announces Android Studio 1.3)

Nexaweb also showed off its cross-platform development tools. Its focus is on JavaScript and HTML5 applications. Using Nexaweb, developers can deploy to multiple operating systems without the need to rewrite their code from scratch, or to maintain separate code branches per platform.

Of course, Xamarin was also on hand to help Microsoft developers bridge the gap between .NET and the Android platform. Xamarin allows C# developers to deploy to mobile devices, no matter the operating system.

Developers building mobile applications for multiple platforms would also been interested in Embarcadero. The company was showing off many of its development tools, which can save coders time when building applications.

Once those applications are built, however, it’s time to test them. Applause (formerly uTest) was at the show demonstrating its crowdsourced testing capabilities. Nearby, MasterCard was showing off its APIs, which can give developers access to a wealth of information, such as which nearby restaurants the locals favor.

Dolby Labs was demonstrating its Android API, which is only 34KB and can be embedded into existing applications. Using the Dolby API, developers can quickly upgrade the audio in their applications to support Dolby surround sound and other high-quality audio reproduction capabilities within their applications.