Risk Analysis Tools and Information Sites
www.microsoftexceltraining.com
Professional Microsoft Excel consultant offering services in all aspects of Excel and VBA for Excel. These include: Training, Add-ins, Spreadsheets, Help desk etc. Lots of free tips and tricks.
Palisade are the producers of @Risk, one of the most popular Monte-Carlo simulation tools. It does a lot more than Quadrant. It costs a lot more too.