When comparing Mosaic vs ExtensionSimple Speed Dial, the Slant community recommends ExtensionSimple Speed Dial for most people. In the question“What are the best new tab extensions for Chrome?” ExtensionSimple Speed Dial is ranked 10th while Mosaic is ranked 16th. The most important reason people chose ExtensionSimple Speed Dial is:
Users can set their own icons for their shortcuts, allowing for the page to be customized to the users wishes.
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Pros
Pro Clean, tiled interface
Mosaic displays bookmarks in a tiled layout on a changing background.
Pro Customizable icons
Users can set their own icons for their shortcuts, allowing for the page to be customized to the users wishes.
Pro Cloud sync
ExtensionSimple Speed Dial has a free built in cloud sync feature that will remember a users settings from one PC to the next.
Cons
Con In alpha
It's still early in development and parts of it may be buggy.