Cooltipz.css is a lightweight, accessible, CSS only, configurable tooltip library for modern web UI/UX design.
A simple, lightweight pure CSS library helps you create animated tooltip for any dom elements using html5 data attributes.
HINT.css is a tooltip library made in pure CSS/CSS3 that allows you create nice looking and animated tooltips/hints on your web page.
pop-pop.css is a simple, accessible, flexible, customizable CSS tooltip & popover library for the modern web & mobile design.
The TooltipsJS library appends a minimal yet customizable fading & sliding tooltip to any DOM element. No CSS and 3rd dependencies.