I recently got introduced to Force.com which is a platform from salesforce.com that allows a user to quickly build interesting & powerful data centric applications without having to write a single line of code.
A week ago, I used to think of salesforce just as an online tool to manage sales data for an organization. I was very pleasantly surprised to find that their platform has now evolved much more than just being a CRM. They interestingly have a tutorial kind of a document that provides step by step instructions for building a hiring solution for a organization’s HR team. The example provides detailed instructions on how to go about it and exposes the reader (in steps) of the power of the underlying platform. I certainly think, I might be using this a lot for building applications quickly.
For more details, just sign-up as a developer, get an account spend time on reading the documents along with trying out their stuff and you should be ready to do a lot of interesting apps on their platform with very minimal effort. The URL http://www.salesforce.com/developer/ would be a good starting point.