What are some alternatives?
When comparing Debian Package Maker and NSIS, you can also consider the following products
Inno Setup - Inno Setup is a free installer for Windows programs.
InstallShield - If your software targets Windows, InstallShield is your solution.
CreateInstall - Professional installer software is an essential component for any software developer.
IzPack - IzPack is a one-stop solution for packaging, distributing and deploying applications.
Debreate - Debreate is a utility to aid in building Debian packages (.deb).
WiX - Create a free website with Wix.com. Customize with Wix' website builder, no coding skills needed. Choose a design, begin customizing and be online today