The Mac App Store is the desktop version of Apple's famous iOS App Store. It provides many thousands of applications available to buy and download, or gift to others. There is also curated content, which includes listings of the most popular apps in various categories, as well as staff picks and recommended software. Apple provides education discounts as well as free copies to family members if one person makes a purchase. You can also redeem gift cards towards making purchases of apps or subscriptions. Unfortunately, the Mac App Store cannot be browsed online as it requires the App Store software, which is pre-installed on compatible Mac computers.

As well as having the development tools installed, you will also need to sign up to the Apple Developer Program. If you are not already a member you can sign up on their website here: developer.apple.com/programs/enroll/. The development resources are free to access, but there is an annual subscription charge for access to the code signing tools, which are required to publish software to any of their App Stores.