LiquidSilver is a SharePoint Framework that provides various classes and functions to deal with common tasks in any SharePoint development to help you work much easier, faster, more object-oriented, and more productive. LiquidSilver is compatible with WSS 3.0 and MOSS 2007.

Resources:

1. Source Code
2. Issue Tracker
3. Introduction
4. Getting Started
5. Working with SharePoint Lists in LiquidSilver
6. Project Updates