NHP Theme Options Framework is a simple, easy to use, very extendable options framework for WordPress themes. Every function/action can be customized, with more hook points and configuration options being added with every update.
I always loved NHP… unfortunately, it hasn’t seen development in six months and the bugs and feature requests have been piling up. As a result, I got tired of watching problems go unsolved, forked NHP, and released my own framework which resolves most of the issues people had with NHP and adds a few features of my own! If you want to take a look at my continuation of NHP, check out https://github.com/ghost1227/Redux-Framework/
NHP has merged with ReduxFramework. See: http://reduxframework.com/2013/10/redux-welcomes-lee-mason-leemason-original-creator-of-the-nhp-framework/