British Telecom (BT) have published a SDK for Web application developers. This SDK exposes BT network capabilities as an API for developers to use in websites and applications.

With this SDK, one can integrate highly secure services such as Messaging, Voice, Conference Call, Authentication or Inbound SMS into an application. Simply register, purchase credits, download the SDK and start developing!

There are a number of examples to get started, and more help in the forum and documentation.

Windows Live Services

Build compelling applications and websites - For the latest Web2.0 mashup SDK's and tools for the Windows Live environment, visit http://dev.live.com.

• Visual Studio
• ASP.NET Ajax
• Expression Studio
• Silverlight
• Popfly

Google Tools

• Google Desktop SDK
  Display personalized content in a desktop gadget, notify users of important events as they happen. You can also customize a desktop gadget to respond to user actions, such as composing an email.
• Google Web Toolkit
  With GWT, you can develop and debug AJAX applications in the Java language using the Java development tools of your choice. When you deploy your application to production, the GWT compiler translates your Java application to browser-compliant JavaScript and HTML
• Andriod SDK
  Android is a software stack for mobile devices that includes an operating system, middleware and key applications. This SDK provides you with the tools and APIs necessary to begin developing applications on the Android platform using Java.

Enterprise Service Bus (ESB)

A detailed definition of an ESB can be found on the wikipedia. An ESB is essentially the backbone of a SOA-based enterprise network - although it does not implement a SOA, but provides the features with which one may be implemented. The ESB itself is the piece of software that lies between the business applications and enables communication among them. In the context of an IMS/NGN framework, and ESB would help to enable smoother integration with northbound OSS/BSS systems and an SOA-based SDP. A number of open-source implementations are available:

• Apache ServiceMix is an Open Source ESB that combines the functionality of a SOA and an Event Driven Architecture (EDA) to create an agile, enterprise ESB.
• Project Open ESB implements an ESB runtime using Java Business Integration as the foundation. This allows easy integration of web services to create loosely coupled enterprise class composite applications.
• Mule - Open Source ESB and Integration Platform. It is light-weight messaging framework that contains a distributable object broker for managing communication between applications.
• BEA AquaLogic Service Bus is a carrier-class (commercial) ESB, available freely with a 5-user (developer) license.

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