An HTTP server built into the TiVo lets you browse web page versions of TiVo metadata from a browser on the same network, and a RESTful API lets you pull XML versions of the same information.
TiVo2Go (actually TivoToGo) is the functionality of the TiVoDVR that is involved with transfers of video from the TiVo device to a computer and, indirectly, to portable video players. While “TiVoToGo” is typically used to describe the entire functionality of transferring video from the TiVo box to the computer, “TiVoToGo” is also the name of the software program that is used to enable this functionality. A Mac and Windows version can be downloaded for free from TiVo. There are also free open source alternatives of varying quality and functionality including Galleon, Etivo, and TVHarmony Autopilot.