Pivot4U is an add-in for Microsoft Excel that allows you to edit pivot tables within the spreadsheet program.
A pivot table is a data summarization tool that, among other functions, can automatically sort, count, and total the flat data stored in one table or spreadsheet and create a second table displaying the summarized data. By default, Excel doesn't support the ability to change the data in a pivot table, but Pivot4U lets you do so seamlessly.
With Pivot4U, you're able to manipulate pivot tables in a number of different ways. You can easily filter data based on certain criteria, or rotate rows and columns to see the data in a different way. You're able to change data in cells, subtotal rows, and grand total columns.
Pivot4U installs via a standard Windows installer and then appears as an option in the Excel Add-Ins menu. There's no help file included within Pivot4U, although there is a sample Excel file with a tutorial, which has to be downloaded separately from the developer.
Pivot4U fulfills a very specific need, but if you're looking to edit pivot tables in Excel, it makes for a reliable solution.