Sketch:

Today, we’re announcing an important change in how you receive updates to Sketch. After much thought, and with a heavy heart, we’re moving Sketch away from the Mac App Store. If you’re a Mac App Store customer, all you need to do is download Sketch from our website, launch it and enter your email address to receive your license. […]

There are a number of reasons for Sketch leaving the Mac App Store—many of which in isolation wouldn’t cause us huge concern. However as with all gripes, when compounded they make it hard to justify staying: App Review continues to take at least a week, there are technical limitations imposed by the Mac App Store guidelines (sandboxing and so on) that limit some of the features we want to bring to Sketch, and upgrade pricing remains unavailable.

In the words of Linus, “those are good reasons.”