FoSi is a tool designed to visualize the folder size on your hard disk with the purpose to gain additional space. FoSi is able to display the size of folders including their subfolders in chart or list form. You can simply browse through those folders by clicking on the chart bars or pies or by using keyboard shortcuts.The usage is easy and intuitive. Simply start by clicking ?RUN?. If you don''t know the function of a button, you may hoover over it with the mouse for a second or so, then a tool tip appears. In the most cases this should be enough to get things moving. If you need more information press F1 to open this help file.How does it work?First select the folder or drive you like to calculate by using the drive combo, directory browse dialog or the explorer window. Then press run (1) calculate the size of a folder within its subfolders, The results are displayed in a Folder List or in Chart views where they even can be animated, sorted, printed, exported etc..Once the size of all directories has been calculated, you can simply click on the entry in the Listview or a bar in the Bar Chart or on a pie in the Pie Chart, to navigate into nested directories. Navigate back with the "Up one Dir (1) " button.Explorer Style Directory List with Folder SizesBrowsable directory size chart in Bar viewBrowsable directory size chart in Pie viewExport Chart as BMP fileBrowse DialogSave Fosi resultsSorting Folder ListCustomizable colors and design of the program/charts/buttonsToggle Legend, Labels, Hints, 3D ViewRotate PieKeyboard ShortcutsPrint List/Bar/PieFolder Functions:Enhanced Print functions for List. Print /Bar/PieSave/Load Fosi resultsVery customizable Export as Excel, Text and CSV file Generate HTML File with folder and chart linksZooming and Panning in the Bar ChartSorting Folder-, FileList and ChartsPrint PreviewPrint List with options