The third iteration of the TinyTable table sorting script adds search, column averages and totals, record numbering, a view all function, and a reset function. At only 6KB it is still lightweight, quick, and includes all previous features.
TinyScroller is a basic scrollable div script at only 1.7KB. It can be used with any HTML and degrades gracefully. The styling is completely customizable through the simple CSS.
amCharts if a full-featured Flash based charting library with a powerful JavaScript API.
TinyBox is a lightweight and standalone JavaScript popup box script. At only 3.4KB it allows for any AJAX or HTML input and can also be used for images and auto hiding alerts.