The official Dutch Titanium user group organizes meetups for those interested and working with the Appcelerator Titanium platform for creating apps.
We meet every first Wednesday of the month. We have free pizza and drinks at 19:00. The actual program starts at 19:30. You're welcome to come straight out of work as well. The lounge opens at 17:30.
Titanium is an excellent tool for people using web development skills (JS) to build cross-platform 100% native (no webview) mobile apps for iOS, Android, BlackBerry 10, Tizen and Mobile Web. Windows 8 is expected to be added soon.