gForums is a WordPress theme that turns your blog into a fully-fledged forum. And you won’t need to rely on other software packages to get up and running with gForums. Whether you want to add a forum to your existing blog or just start a new forum on a brand new domain, gForums has you covered. It contains in root directory of WordPress install and give you the tool to manage your users and let your visitors engage in discussions on your website.

If you want to allow visitors of you blog to contribute posts, without giving them login information. TDO Mini Forms plugin allow you to add highly customizable forms on you blog. This plugin will allow non-registered users or subscribers to submit posts. Posts submitted by users are kept as “draft” until an admin publish these posts. The plugin provides an extensive moderation view so administrators and editors can see posts awaiting approval and publish or delete them. Administrators can a

Now with help of ‘Article Directory WordPress Plugin‘ you can turn your WordPress blog into an article directory. This plug-in is written by Dimox . With this plug-in you can change structure of main page or any other page and also you can change structured list of categories. If you want custom design of article directory, it can be easily customized with CSS. Article Directory WordPress  Plugin have easy to use interface, after implementation of plugin you can make several changes