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.
Dario de Judicibus - Dictionary Team
Unicode Dictionary has a program and the linguistic modules.
August Tenth Systems Inc
With this program, developers can make mass changes to PL/SQL code in minutes.