WordPress Tooltips
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Next on our list is WordPress Tooltips. This is quite a powerful little plugin that gives you a great deal of customization ability and options for your tooltips.
Besides having the same glossary functionality that CM Tooltip Glossary features, WordPress Tooltips also allows you to add multiple types of content to each Tooltip: text, images, links, videos, radio, and mp4 are all possible (careful, though, overboarding on too many types of content in your tooltips could be a real put-off to your readers).
7 preset color schemes and 9 trigger methods are also available to choose from in this nifty plugin.