Nokia Developer Offers is a set of design, development, and troubleshooting tools that will help you build great Windows Phone apps that appeal to your users and speed your time-to-market. This set of tools is free for eligible developers who live in countries where DVLUP is available.
Nokia Developer Offers provides you access to the following tools:
Microsoft Windows Phone Dev Center subscription (1-year)
BugSense Performance Monitoring Solution for Windows Phone (3 months free trial)
Infragistics NetAdvantage for Windows Phone (1-year)
Telerik Rad Controls for Windows Phone (1-year)