Aspose.Cells could be deployed on your machine in two ways: using full MSI installer or just the single dll. Both of them are available for free download at the Aspose.Cells download page . Using the installer has a couple of advantages:

• it makes all necessary entries into the system registry to expose Aspose.Cells classes to COM applications, adding the assembly to the Add Reference dialog box in Visual Studio etc;
• it contains the demo projects that allow you to obtain "real" code samples;
• it contains the offline API documentation.