As nice scroll is a jquery plugin for WordPress site. This plugin will create a nice scrollbar for your site.

AS login you can fully customize wordpress login page.

Bake Post can be used to display recent posts and posts from particular category and tags. (Not compatible for Multisites)

Independently control the number of posts listed on the front page, author/category/custom post type/custom taxonomy/tag archives, search results, etc.

This simple plugin allows to set a minimum number of items per order

Attach pages to your products with limited access until purchase.

Remove site access from Internet Explorer users and offer them a link to download Chrome.

Limit Revision Publishing restricts edits made by users without the publish_{post_type} capability.

Counts dynamically the characters/words in edit post window and limit the characters/words count if needed for one or more user roles.

Get more control over your users and wp-admin

It adds an option to the Network settings page when you are logged in as site admin of the wpmu site(or wpmu+buddyppress site),Look at the bottom of options page,and You will see a text box like this asking for number of blogs allowed per user.If you set it to zero(which is the default),It will not restrict the blog registration then.

Adds a limit parameter to the [gallery] shortcode.

Limit post titles (including pages and custom post types) within the WordPress dashboard.

Secure your website with the most comprehensive WordPress security plugin. Firewall, malware scan, registration blocking, login security & more.

A plugin for WordPress that limits the number of widgets in a sidebar.

Show Overview and WP Memory Usage Enhanced Widget on WordPress Dashboard, Memory Load Peak, db size, Footer Admin Control Panel with less consumption.

100% FREE website functionality.

This wordpress plugin provides a tagcloud that shows tags depending of the current context (e.g. Category, Author, Tag, Post) only. The tag-links of the cloud can be restricted to the current category or current selected tag, like a drill down navigation. The style, sizes and the conditions where the widget should be visible, are configurable.