Need help to decide whether to go for ASP.Net Website or PHP

[Nilam2477]

Hello
I'm new to Web based technology and i have to decide whether to implement using ASP.net or PHP
Here is my requirement
There will a be a Web based software which would be sold via website download.
There were 2 options
1. There will be one Web Server controlled by one person where you have the link to purchase the software. When user purchases the software, in the same Web Server virtual directory will be created and user will start using software.
2. Allow user to download the software with the setup and he will decide to host the software on his own Web Server.

I decided to go for 1st option considering the following points
If i develop my software in asp.net then since I have one Web Server which can host on IIS.
If I allow user to download and host on their web server then if they have Unix server, my website software developed in ASP.net might not work, their UNIX server might not have IIS

I understand that if it PHP based then it works on both Windows & Unix

Is my understanding right.
Please help me to decide how to go about. Are there any other points I need to consider while designing the software

Thank You for your help in Advance

[Frinavale]

ASP.NET requires the .NET Framework. The .NET Framework is proprietary and is only available in the Windows Operating System. There are some Linux/Unix projects, like Mono, which are slowly porting some of the .NET Framework so that .NET applications can work in Linux and (not sure about Unix though...) However, these projects only offer a limited portion of .NET.

ASP.NET also requires IIS in order to work properly. You cannot run ASP.NET on another web server like Apache.

Therefore, since your requirement is to reach as many potential clients as possible, who may use a variety of operating systems, I recommend that you go with the PHP solution since it can run on multiple platforms and can be configured to work with Apache or IIS.

-Frinny