If you try to place labels for points on a timeline (or any 1D space), one common problem is the labels often overlap. Labella.js will help you to fix this.
Purplecoat.js is a jQuery plugin that lets you create labeled overlays that can be triggered with a click. And you don't need to write a single line of Javascript.
flyLabel.js is a flexible floating form labels to make your boring placeholders super fly. With flyLabel.js, it's easy to trigger custom behaviors on form labels.
floatlabels.js is a jQuery plugin for the Float Label Pattern. The Pattern is easy to explain. On User Interaction with an input field the placeholder value moves up, and is displayed above the typed text.
This Plugin offers you the possibility to upgrade your forms with this famous pattern.
Augments form labels to behave like placeholders, but with a twist.
jQuery Label Better will let you create a beautiful unobtrusive label for your form's input fields with animation. The uniqueness about this plugin is that all you have to do is add a placeholder text, and we will show the label only when the user needs it.
jQuery Super Labels is a form field overlay plugin that hides labels when an input gains focus. It’ll work automatically with most text fields. If the label needs to be displayed in a different location, suitable options can be provided.
Super Labels has advanced options for controlling animation easing and duration.