Although Apple just announced OS X Mountain Lion last Thursday, Mac apps are already getting updated for compatibility with the next-gen OS. Mountain Lion is only available as a developer preview, but that hasn’t kept Smile from updating its popular PDF editor for the Mac, PDFpen, with Gatekeeper compatibility.
Smile makes great productivity apps for the Mac, like TextExpander. With this latest update to PDFpen, a Gatekeeper-friendly Developer ID has been added to help future Mountain Lion users install the app in a secure environment.