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simptip
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
What are some alternatives?
SpinKit - A collection of loading indicators animated with CSS
qTip2
colors - Smarter defaults for colors on the web.
tooltipster - A jQuery tooltip plugin
fancyInput - Makes typing in input fields fun with CSS3 effects
hint.css - A CSS only tooltip library for your lovely websites.
pnotify - Beautiful JavaScript notifications with Web Notifications support.
Gutenberg - Modern framework to print the web correctly.
Sequence - The responsive CSS animation framework for creating unique sliders, presentations, banners, and other step-based applications.
opentip - Opentip is an open source javascript tooltip based on the protoype framework.
odometer
Marx - The classless CSS reset (perfect for Communists).