Cocoa Controls Overview
A collection of open source and commercial UI components for iOS and OS X. You can search and filter the collection by platform and license or whether it's available on CocoaPods, and each component shows its current star rating and the apps it's been used in. Cocoa Controls is a great way to find really useful third-party UI components or just to get inspiration for your own. You can also submit your own controls to be listed or distributed on the site.