Setup Factory is an install maker software development tool for creating Windows installer setup.exe programs. Features advanced installer capabilities like custom dialogs and script actions. Feature rich but less expensive than Installshield.
Downloads: 23508 - Shareware - Download Now

Create or update MSI based installers for files, registry etc using an XML like script. Can use in automated builds (NMAKE, ANT, NANT builds etc). A HTML report can be created (with a "file verify" button). For both beginners and advanced users.
Downloads: 48107 - Freeware - Download Now

CreateInstall Free is a freeware installer for producing good looking setups. Building installation projects are surprisingly easy with its simple user interface. The resulting setup files can be compact and easy for the end user to install.
Downloads: 18755 - Freeware - Download Now

Tarma Installer creates fast, compact, and full-featured software installers for Microsoft® Windows® platforms. Requires no scripting; includes an intuitive and comprehensive development environment with extensive preflight checking.
Downloads: 41447 - Shareware - Download Now

MSIDIFF is freeware to compare or disassemble Windows Installer databases (a "MSI to TEXT" utility). While it is a command line based tool, the installer creates shell extensions so that it can be invoked by right clicking on a file in Explorer.
Downloads: 49512 - Freeware - Download Now