Solution 1:

iWeb Alternatives

  • DreamWeaver -> http://www.adobe.com/in/products/dreamweaver.html

  • Flux 4 -> http://www.theescapers.com/

  • Web Acapella -> http://www.webacappella.com/
  • Sand Vox -> http://www.karelia.com/sandvox/from-iweb-to-sandvox.html

Solution 2:

There are a few options, depending on your knowledge on html and css.

I recommend one of these:

  • Rapidweaver. It's not free but it's very polished and you can download a trial.
  • Sandvox. Also not free. It has a guide for Transitioning from iWeb.
  • Kompozer: "a complete web authoring system that combines web file management and easy-to-use WYSIWYG web page editing." It's free and open source.

My advice is to download and try them all.