Enrico Rossomando

Whenever you try to login into your website, you can use this plugin to trasmit your password encrypted. The encryption process is done by the Chap protocol; this is particularly useful when you can’t use ssl or other kinds of secure protocols. By activating the ChapSecureLogin plugin, the only information transmitted unencrypted is the username; password is hided with a random number (nonce) generated by the session – and opportunely transformed by the SHA-256 algorithm. 
In the first login there will be an error, but don’t worry is only a tecnical error. Indeed in the next login’s operation, if the values are correct, there will not be errors, but you give mind because the password will sended in unencrypted way. 
If you want more details about this algorithm, check <a href="http://www.devarticles.com/c/a/JavaScript/Building-a-CHAP-Login-System-An-ObjectOriented-Approach/" rel="nofollow ugc">“Building a CHAP Login System”</a>. 
This is a zero-configuration plugin.
Enrico Rossomando (redsend) this is my blog about programming, gaming and startup > <a href="https://www.mrred.it/" title="Blog about programming, gaming and startup" rel="nofollow ugc">https://www.mrred.it</a>

Chap Secure Password Login

Do not show password, during login, on an insecure channel (without SSL). Use a SHA-256 hash algorithm.

BuddyDev

Brajesh Singh

WordPress Username availability checker for WordPress & BuddyPress checks for the username availability on new user registration screens. 
It assist users & site admins by notifying them using ajax whether the username they entered is available or not.
<h4>Features</h4>
<ul>
<li>Checks for username availability in WordPress Admin New User screen</li>
<li>Checks for username availability on WordPress standard registration page</li>
<li>Checks for availability on BuddyPress registration page.</li>
</ul>
For screenshots & more details, please visit <a href="http://buddydev.com/plugins/bpdev-username-availability-checker/" title="Plugin page" rel="nofollow ugc">BuddyDev Username Availability Checker plugin page</a>
Free & paid supports are available via <a href="http://buddydev.com/support/forums/" title="BuddyDev support forums" rel="nofollow ugc">BuddyDev Support Forum</a>. Please Use BuddyDev support forums for your support requests. We may not be able to keep an eye over WordPress plugin support forum.

WordPress Username Availability Checker

WordPress Username availability checker checks if a username is available or not.

Chap Secure Password Login vs WordPress Username Availability Checker