This well-designed and easy-to-use free PDF viewer lets you mark up and create PDFs. Adobe’s popular PDF format makes files look great and Adobe’s free Reader lets everyone look at the files ...

Mozilla has released Firefox 18 beta for Windows, Mac, and Linux. New features include faster JavaScript compiling via IonMonkey and Retina Display support.

Microsoft Edge will get some powerful tools for viewing, marking up, and even signing PDF documents when the Fall Creators Update ships. Here's a rundown of what's new.