TortoiseSVN - The coolest interface to (Sub)version control
Adobe Acrobat DC - Make your job easier with Adobe Acrobat DC, the trusted PDF creator. Use Acrobat to convert, edit and sign PDF files at your desk or on the go.
SnailSVN - Similar to Tortoise SVN for Windows but integrated into Finder
Foxit Reader - Foxit Reader is a free and light-weight multi-platform PDF document viewer.
Xversion - Super easy enterprise class version control.
Wondershare PDFelement - All-in-one PDF editor