PDFPen Pro lets you view and manage your PDF files, just like with Adobe Acrobat XI. It’s another alternative to Adobe Acrobat for Mac OS X El Capitan. It can convert files to other popular formats. This software not only allows you to view PDFs but also edit its text and images. You can also draw markups, highlight, edit text pages, and add comments. Use this tool to scan, redact, sign PDFs, and fill out PDF…