Toolsley File Identifier vs TrIDNet

Toolsley File Identifier is a free utility that identifies unknown file types. It scans files to detect signatures and compares them against an online database to retrieve file format descriptions and specifications. Useful for determining what programs can open unrecognized files.

TrIDNet is a portable program that can identify different file types based on their binary signatures. It has an extensive database of file types and can quickly scan files to determine their likely type.