GtkSheet is a matrix widget for GTK+. It consists of an scrollable grid of cells where you can allocate text. Cell contents can be edited interactively through a specially designed entry, GtkItemEntry. It is also a container subclass, allowing you to display buttons, curves, pixmaps and any other widget in it. You can also set many attributes as: border, foreground and background color, text justification, and more. GtkSheet comes also with an extra set of useful widgets and a demo program showing all of them interacting in a spreadsheet-like GUI.