sircelj.m

This plugin captures all pages of your blog and uploads them to Amazon S3. This way you can host your blog as a static page for very little cost.
Before you run your blog this way, make sure that you are not using any functionality that isn’t static or replace it with a service. For example: 
 – disable comments or use Disqus plugin instead of standard commenting system 
 – disable search 
 – use Google Forms for contact form 
 – etc.
To publish new content, you will have to run your server with WordPress, write new post and then run the plugin again to create new files. For that purpose it is best to run WordPress on your local machine or to make an EC2 instance in Amazon cloud and run it only when you are updating your blog.
!!! For more detailed instructions see http://www.s-media.si/wp-blog-on-s3-or-gcs/ !!!

Host your blog on S3 or Google Cloud Storage

Transfer your blog to static html pages and upload it to Amazon S3 or Google Cloud Storage.

JoshuaPack

Why choose this plugin?
<ul>
<li>404 pages not working? </li>
<li>Would you like to have a custom 404 page? </li>
<li>Would you like the 404 page to be a static page? </li>
<li>Do you need to have a WordPress CMS page as your 404 page?</li>
</ul>
This plugin does it!
This a rebel plugin that does not use WordPress’s 404 hook. It was developed for themes or plugins that cause issues with the hook itself.
For more information see FAQ page.

HTD 404

This plugin will simply allow you to point to a page to serve up if you get a 404 error. Also it marks it as 404.

Host your blog on S3 or Google Cloud Storage vs HTD 404