Here is a list of the best free CHM file reader software and online tools. These free software and online services allow you to open and view CHM documents. CHM, which stands for Compiled HTML file ...

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 ...

There are times when Acrobat Reader DC fails to open a PDF file and displays the following error message: Adobe Acrobat Reader could not open PDF because it is either ...