Download of PageProof 1.0 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The actual developer of this free Mac application is PageProof. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. The software is included in Productivity Tools.
From the developer:
PageProof is an online proofing platform that lets you gather feedback and approvals on your creative work quickly and easily. You can use PageProof to create proofs of Microsoft Office files, Adobe files, imagery, PDFs, brochures, video, audio, presentations, websites, HTML web banners, e-mail templates, 3D content and more. Your reviewers all comment on the same file, in real-time – placing comments directly on top of your work.
You may want to check out more software for Mac, such as PitStop Extreme, FileOpenInstaller or Portable AbiWord, which might be related to PageProof.