Tobias Nyholm

Prevents an user to publish a post without a thumbnail. If a user presses the publish button without a thumbnail, the post will 
be saved as a draft. For more information see installation page or the 
<a href="http://www.webfish.se/wp/plugins/require-thumbnail" title="Webfish - WordPress plugin" rel="nofollow ugc">Webfish</a> homepage.

Require Thumbnail

Prevents an user to publish a post without a thumbnail.

Rashed Latif

I Appreciate if you please give reviews and any suggestions after using this plugin. If you like this plugin you can donate or contribute by clicking on this <a href="http://www.technologiestoday.com.au/donate/" rel="nofollow ugc">link</a>
TT Post Viewer is a plugin that lets you display Most recent posts, Most popular posts, Most commented posts, Related Posts, Featured Posts, Posts by author, Posts by category, Posts by date in widget area and also can be displayed in post area by using short codes. Posts can be displayed as List or with thumbnail. You can also select whether you want the excerpt to be displayed or not and you can also set the number of words to display.
This plugin is checked on different popular themes and it works fine in most themes. In some themes you may need to tweak style sheet to make it look better. For some themes it doesn’t install. So if you experience any difficulties at the time of installation please try to install on a different theme for test purpose to make sure its the theme causing this issue. Other than that it works absolutely fine with the latest version of wordpress. Few more features will be added in the future versions.
Check the <a href="http://www.technologiestoday.com.au/guide-to-use-tt-post-viewer-plugin-for-wordpress-2/" rel="nofollow ugc">TT Post Viewer</a> plugin page for more information and installation guide.

TT Post Viewer

Plugin to display posts in different ways.

Require Thumbnail vs TT Post Viewer