TinyGraphs is an open source Excel add-in that creates sparklines, mini column graphs, and area graphs from a row of data. It generates beautiful tiny graphics that are as small as a cell and are useful for visualizing large quantities of data.
MicroCharts allows you to create richer, more concise Excel reports and dashboards with more information per square inch. These data-rich, word-sized charts and graphs clearly visualize business data for better decision-making.