PDF files have become ubiquitous in our multi-platform world. This convenient file format makes it possible to view and share documents across various devices using various operating systems and ...

Using a VPN, or virtual private network, is one of the best ways to protect your online privacy. We review dozens every year, and these are the top VPNs we've tested.

These top-rated backup services make it easy to create online and local copies of important files so you can retrieve them if disaster strikes. I've been testing PC and mobile software for more than ...