iOS: You wouldn't really think a clipboard manager would be that helpful in iOS, but Clips is a new app that proves that thought wrong. With it, you can easily cut, copy, and access clipboard history from anywhere in iOS.
Clips is packed with features. On top of the app, you also get a Notification Center widget, a custom keyboard, and a share menu. Once everything is set up, Clips stores your copy history, makes it accessible from a variety of places, and allows you to customize how clips are pasted. It works with text, rich text, and images. If you install the keyboard, you can easily access your clips from any app, but otherwise it integrates nicely with iOS's built-in copy/paste function. The app is free, but the $1.99 in-app purchase unlocks unlimited clipping and iCloud sync.