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 ...

MicroDicom is free for non-commercial use. If you are a medical student, you can use it for free. When you run it for the first time, it will ask you to register MicroDicom. Select the desired option.

Adobe Acrobat was once the gold standard for PDF viewing and editing, but it's grown bloated, invasive, and expensive. Okular offers a refreshing alternative that's fast, free, privacy-friendly, and ...