mrwulf

Completely integrated with the wordpress menu system so your theme’s menu menu styling is used.
Basic log in/out and register menu items that are only visible when appropriate.
Awesome custom menu item type will let you link to any page that requires the username as part of the url (example.com/members//messages). Tons of tags can be used to customize the menu text: 
* User Info: username, firstname, lastname, displayname 
* BuddyPress counts: unreadmessagecount, friendcount, groupcount 
* BuddyPress counts that hide when zero: (unreadmessagecount), (friendcount), (groupcount) 
* BuddyPress/WordPress avatar: avatar, avatar-thumb, avatar-mini
This plugin works great with “Menu Items Visibility Control” to only show menu items to certain roles/levels. 
Also, try “WP ToolBar Removal” to totally replace the ugly unthemed wordpress/buddypress menu.

BP Direct Menus

Add real menu items that go directly to buddypress pages! Add a profile dropdown with avatar, message counts, and more- fully customizable.

itzoovim

WordPress Login Box (WPLB) lets you add a log in/out box to your website.
WPLB includes an options panel which gives you control over your form.
Features:
<ul>
<li>Different styles</li>
<li>Highly customizable</li>
<li>Lightweight</li>
<li>Can be integreated with any theme</li>
<li>Works well with other plugins</li>
<li>Hackable</li>
</ul>
This plugin lets you choose custom links for a forgot your password page,and registration page. 
It also lets you choose a url that you users will be redirected to after they log-in/out. 
You can also enable the option to not redirect your users to WP-Login after failed login attempts! 
This plugins works well with other member plugins, and can help you create an overall better user experience.
You can view a sample <a href="http://itzoovim.com/plugins/customize-and-add-a-wordpress-login-form-to-your-site/#sample_wordpres_login_form" rel="nofollow ugc">wordpress login form</a> by visiting this link.
<h3>Requirements</h3>
In order to work, WPLB needs the following :
<ol>
<li>PHP version 5+</li>
<li>Preferably the latest version of WordPress.</li>
</ol>
<h3>Donations</h3>
We are still working on a donations link at the moment. For now, leaving a nice rating will be appreciated as well.

WP Login Box

Easily add a forum like log in/out form to your site.

BP Direct Menus vs WP Login Box