Adobe Acrobat enables you to edit, convert, sign, send, and manage PDF documents on Mac and Windows. With the recent addition of the Adobe Document Cloud, you can now work on PDFs across devices -- laptops, desktops, tablets, and smartphones.
The current version, Adobe Acrobat DC, works with OS X v10.9 and Windows 7 and above.
Adobe Acrobat Pro DC
Adobe Acrobat Standard DC
Wondershare's PDFelement ($69.99-$242.99) lets you modify text, images, and pages in your PDFs with advanced editing options, quickly batch-convert from or to PDF from popular file formats, and preserve original layouts. You can seamlessly complete and create personalized PDF forms with text fields, buttons, drop-down lists, and more. PDF encryption and password protection are also available.
Nitro Pro 10 ($159.99) allows you to create, convert, combine, edit, sign, and share PDFs. It also offers cloud integration to let you and other users manage the same document on different devices. Security-wise, you can password protect, restrict permissions, and encrypt PDFs; the Search and Redact feature enables you to wipe out sensitive data before anyone sees it.