The best free PDF reader apps do more than just act as a PDF viewer - any modern browser can do that. What I'm looking for is tools that go beyond that, offering commenting, collaboration, and ...

PDF Viewer’s name belies the power under its hood. This is more than just a viewer app. PDF Viewer includes powerful PDF editing tools on par with, and in some cases more extensive than, some of the ...

It’s been more than 25 years that PDF files have been around, and they’re not going anywhere anytime soon. As PDFs are the most popular format for presentations and document sharing, they are heavily ...