Optimizely - A/B testing you'll actually use.
Ditto - Easy to use interface; Search and paste previous copy entries; Keep multiple computer's clipboards in sync; Data is encrypted when sent over the network; Accessed from tray icon or global hot key; Select entry by double click, enter key or drag drop…
Zarget - Zarget is new age AB testing and Heatmap software that lets you optimize your website with just a few clicks thereby increasing sales.
CopyQ - CopyQ : Clipboard Manager with Advanced Features.
Integrations.js - Launch new features at the click of a button.
Clipy - Clipy is a clipboard extension for macOS.