RadialMenu
A touch context menu for iOS, modeled on the iMessage record control and animated with Facebook's POP. I started it the week Swift was announced.
RadialMenu is a custom control that opens a ring of options after a long press, like the record menu Apple introduced in iMessage in iOS 8. I created it on June 6, 2014, four days after Apple announced Swift, so it was one of the early public UI controls written in Swift. It has about 300 stars on GitHub.