Terry writes: "I've posted an OAI Harvester written in .NET (C#)  on Sourceforge. The harvester was designed to work pretty much like the OAI::Harvester perl module by Ed Summers, but was designed in C# so that users building web applications in ASP, ASP.NET or stand-alone clients could utilize the component. Like OAI::Harvester, this component has built-in support for Dublin Core, but can be passed custom handlers for handling different metadata schemas. One of the things on my todo list is to provide a built-in package for MARCXML. While the component is written in C#, the software will run on any platform that has either the MONO 1.0 or .NET 1.1 runtimes (program has been tested on Fedora Core 2, Slackware 10 and Windows XP). On SourceForge, I've included three packages: the component; an example program; the component and the example program in one download. Online documentation  is available. The component is being released by myself and Oregon State University Libraries under the general GPL."