PRONOM is a database of information about the technical dependencies upon which access to electronic records may rely. It contains information about the file formats in which electronic records may be stored, the software products required to create, render and migrate these formats, and the vendors who develop these products. It includes product support life cycle information, to facilitate technology watch within digital archives. The PRONOM database can be searched online, and reports produced in a variety of formats. The system currently holds details of c. 550 file formats, 250 software products, and 100 vendors, and records are being added on a regular basis