Develop an application and you need a system of adding this to a users system. The Windows operating system requires certain Registry keys in order to be able to find applications and files on your computer, as well as associate filetypes with installed software.
For this reason, applications have always been wrapped up in an installer, which enables the user to select the destination, choose a customised install and much more. As a lot of software is distributed on a freeware basis, most programmers can’t afford to purchase commercial installer software to distribute their software.
Inno Setup is a free commercial-grade installer development tool that will enable you to create professional installers suitable for most uses. You can use it to create a multi-lingual installer, compress the content to save space, create 32-bit as well as a 64-bit installers and much more.
What's new in Inno Setup 5.5.9 (see "what's new" for more info)?
This is one of the best installer developer tools available and will enable you to produce commercial-level installers