Windows software is like Windows games, and the same is true on the Mac side. There are plenty of programs to run on your OS X Mac. And most major programs have Mac versions. But that's most, and not all. And they are often ports of software originally developed for Windows.
The most popular productivity suite for Mac? Microsoft Office. It's good, but it's never quite up to date with the Windows version (as you might expect).
The Windows world is a feast of free- and shareware, free downloads that do just about anything. On the Mac side you have to change the settings to install anything that isn't approved by Apple itself. It means the software all works well, but the choice is limited.