Sharepoint [AT] codeplex

SharePoint for Hosters:
http://www.codeplex.com/SharePointHosters
"This workspace is designed to foster sharing of collateral that is needed to create shared hosting offers on SharePoint (WSS-v3). We will be seeding the workspace with initial collateral such as web services and http modules to address product gaps; and a starter kit that describes how a hoster can create compelling business applications using the application templates."

Community Kit for SharePoint:
http://www.codeplex.com/CKS
"The Community Kit for SharePoint is a set of best practices, templates, Web Parts, tools, and source code that enables practically anyone to create a community website based on SharePoint technology for practically any group of people with a common interest."

SharePoint Forums Web Part:
http://www.codeplex.com/SPFORUMS
"The SharePoint Forums Web Part is a free, open source, single web part that provides a more feature rich discussion board for SharePoint Portal Server and Windows SharePoint Services based sites."

SharePoint 2007 Features:
http://www.codeplex.com/features
"This is a project for SharePoint 2007 Features. Features add new functionality to a SharePoint 2007 farm, site collection, or site. This project will create Features to address deficiencies in SharePoint 2007 or add new capabilities."

SharePoint AJAX Toolkit:
http://www.codeplex.com/sharepointajax
"Daniel Larson's ASP.NET AJAX Extensions Toolkit for SharePoint."

LINQ to SharePoint:
http://www.codeplex.com/LINQtoSharePoint
"The LINQ to SharePoint project provides a custom query provider for LINQ that allows to query SharePoint lists using familiar LINQ syntax."

SharePoint 2007 Test Data Population Tool:
http://www.codeplex.com/sptdatapop
"The SharePoint 2007 Test Data Population Tool (WSSDW.exe) is a capacity planning and performance testing tool that populates data for testing SharePoint deployments."