Facebook-like Context Loader In Pure JavaScript – contextLoader
Yet another JavaScript library which applies a Facebook-inspired animated context loader/placeholder to any container element you specify.
JavaScript & CSS loading indicator
9 CSS Only Loaders
A lightweight collection of 9+ loaders, loading indicators, preloaders styled and animated with pure CSS/CSS3.
16+ Pure HTML / CSS Loading Spinners – Spinners.css
This is another collection of 16+ single- or multi-element loading spinners built with pure HTML/CSS and animated by CSS3.