Examples described relate to classifying software. In an example, a determination may be made whether a software installation directory includes a file to run software. In response to a determination that the software installation directory includes a file to run the software, information may be extracted from text data associated with the software installation directory using named entity recognition technique. The files in the software installation directory may be classified as one of a primary file, a secondary file, or a tertiary file based on respective relevance scores of the files, wherein the respective relevance scores may represent respective relevance of the files against the extracted information.