[orware]

Just in case it might be helpful for someone else (I know it's been helpful for us at the college the past few years).

Here's a great Wufoo-like self-hosted Forms Application (version 4.0 sounds like it's right around the corner too): http://www.appnitro.com/

The software is called MachForms (I don't remember how I found it, but I'm definitely glad I did). I was able to add in LDAP authentication on my own with some customization of the core code (I wish it would be built-in as a feature, but aside from that it works really nicely out of the box).

[aytekin]

We have a simple version of JotForm in the same space. You can install it on any LAMP server: http://www.interlogy.com/products/jotform/

It does support LDAP as well.