In addition to the native data sets local to the UCSC servers, the Genome Browser offers several options to users for viewing their own sequence and annotations: track and assembly data hubs, custom tracks and sessions. Alternatively, the Genome Browser database and tools may be installed on a local server for customized use (see http://genome.ucsc.edu/license/ for more information). Instructions for downloading the data, software and source code may be found at http://hgdownload.soe.ucsc.edu/downloads.html.