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.

Blockvis

Allow users to securely login and register for your site using the <a href="https://www.civic.com/secure-identity-platform" rel="nofollow ugc">Civic Secure Identity Platform</a>. To get started, you will need to register with the <a href="https://www.civic.com/app" rel="nofollow ugc">Civic app</a> and then use the app to log into the <a href="https://sip-partners.civic.com/" rel="nofollow ugc">developer portal</a> to obtain your App ID and API keys.
Note: This plugin requires that the <a href="http://php.net/manual/en/book.gmp.php" rel="nofollow ugc">php-gmp extension</a> is installed 
on your WordPress server. PHP version 7.x is required. For PHP 5.6 compatibility, use plugin version 1.x.
The latest source code and development progress is available on <a href="https://github.com/blockvis/civic-sip-wp" rel="nofollow ugc">GitHub</a>.

Civic SIP

Civic Secure Identity Platform (SIP) authorization plugin. Sign in to your blog using Civic Mobile App.

WP Login Box vs Civic SIP