With UnMakeSIS you can easily see which files are packed into the .sis file.
CD Shell Team
SISContents is a tool that allows you to unpack and sign Symbian 9 SIS packages.
Cequenze Technology Inc.
SISWare is a SIS Editor for Symbian Application Install package builder.
Nik Software, Inc.
Color Efex Pro Complete is a plug-in for image editing applications.
DVDPean Software Inc.
DVDPean Video converts DVD video into a wide range of popular video formats.