Mac Developer Program

The Mac Developer Program is a way developers for Apple's MacOS operating system can distribute their apps through the Mac App Store. It costs US$99/year. Unlike iOS, developers are not required to sign up for the program in order to distribute their applications. Mac applications can freely be distributed via the developer's website and/or any other method of distribution excluding the Mac App Store. Apple provides Xcode for free to developers to code, build, and test their apps. The Mac Developer Program provides developers with many resources to help them distribute their Mac applications.
External links.
Official Website