My most recent app is Org Navigator, a little demonstration of the power of Azure AD, the Directory Graph API and ADAL. You can read more about here. Download link below:
Another little app I wrote is the WP8 AD Toy client, an app designed to help me debug token acquisition issues directly from my phone. Since then I switched to iPhone tho, hence I don’t use it very often anymore… but you can! 🙂
Also. Maaany years ago I wrote a couple of apps for learning the ropes of Windows Phone programming. Those were mostly one-weekend projects, but one of them proved to be surprisingly popular in many markets. Who knows, I might get back to those and add few improvements when it will be time to learn WP8 🙂 BTW, here they are: