FilePropertyEdit 1.23 for Mac was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. We recommend checking the downloaded files with any free antivirus. FilePropertyEdit for Mac is included in Productivity Tools. The actual developer of this free Mac application is WilliamSoftware.
From the developer:
With just several clicks, you can easily change the files attributes, including "create time", "modify time", "last access time", "read-only", "hidden", and "system", as well as modify their properties, such as document summary properties, photo's EXIF properties, MP3 ID3 tags (V1 and V2), and AVI RIFF Info tags. With the cool file and folder browse feature and the drag and drop support, you can add a group of files and directories.
You may want to check out more Mac applications, such as Apimac Clean Text, TAMSAnalyzer or Gordon, which might be similar to FilePropertyEdit.