Jeremiah

This plugin makes creating a custom 404 page extremely easy. If you use WooCommerce you can even display products on your 404 page, helping you capture those lost sales.
Available options:
<ul>
<li>Display Featured or Recently added products</li>
<li>Set # of columns to display</li>
<li>Set # of products to display</li>
<li>Choose to display text only, products only or both</li>
<li>Set page title and text</li>
</ul>
This plugin is now supported by a pro version which includes:
<ul>
<li>The same functionality for empty search results</li>
<li>Priority support</li>
<li>First look at new features and functionality</li>
</ul>
Download the Pro version here – https://wpovernight.com/downloads/silent-salesman-pro/

404 Silent Salesman

Easily Create Custom 404 Page. Turn 404 traffic into profits with WooCommerce.

Duck Dev

Joel James

If you care about your website, you should take steps to avoid 404 errors as it affects your SEO badly. 404 ( Page not found ) errors are common and we all hate it, even Search engines do the same! Install this plugin then sit back and relax. It will take care of 404 errors!
<h4>What is 404 to 301?</h4>
Handling 404 errors in your site should be easy. With this plugin, it finally is.
<blockquote>
<h4>404 to 301 Log Manager – Add-on is now available!</h4>
<ul>
<li>Instead of instant email alerts, get hourly, twice daily, daily, twice weekly, weekly alerts.</li>
<li>Limit the amount of emails sent out based on error logs count.</li>
<li>PDF file attachment of error logs will be delivered through the email.</li>
<li>Automatically clear old error logs based on time period.</li>
<li>Get email alerts to multiple email recipients.</li>
</ul>
<a href="https://duckdev.com/products/404-to-301-log-manager/" rel="nofollow ugc">Get this add-on now</a> | <a href="https://duckdev.com/support/docs/404-to-301-log-manager/" rel="nofollow ugc">See Docs</a>
</blockquote>
404 to 301 is a simple but amazing plugin which handles all 404 errors for you. It will redirect all 404 errors to any page that you set, using 301 (or any other) status. That means no more 404 errors! Even in Google webmaster tool you are safe! 
You will not see any 404 error reports in your webmaster tool dashboard.
<blockquote>
<h4>404 to 301 – Features</h4>
<ul>
<li>You can redirect errors to any existing page or custom link (globally).</li>
<li>You can set custom redirect for each 404 path!</li>
<li>No more 404 errors in your website. Seriously!</li>
<li>Translation ready!</li>
<li>You can optionally monitor/log all errors.</li>
<li>Exclude paths from errors.</li>
<li>You can optionally enable email notification on all 404 errors.</li>
<li>You can choose which redirect method to be used (301,302,307).</li>
<li>Will not irritate your visitors if they land on a non-existing page/url.</li>
<li>Increase your SEO by telling Google that all 404 pages are moved to some other page.</li>
<li>Completely free to use with lifetime updates.</li>
<li>Developer friendly.</li>
<li>Follows best WordPress coding standards.</li>
<li>Of course, available in <a href="https://github.com/joel-james/404-to-301" rel="nofollow ugc">GitHub</a></li>
</ul>
<a href="https://wordpress.org/plugins/404-to-301/installation/" rel="ugc">Installation</a> | <a href="https://duckdev.com/support/docs/404-to-301/" rel="nofollow ugc">Docs</a> | <a href="https://wordpress.org/plugins/404-to-301/screenshots/" rel="ugc">Screenshots</a>
</blockquote>
Bug Reports
Bug reports for 404 to 301 are always welcome. <a href="https://duckdev.com/support/" rel="nofollow ugc">Report here</a>.
More information
<ul>
<li><a href="https://duckdev.com/products/404-to-301" rel="nofollow ugc">404 to 301 – Plugin Homepage</a>, containing more details and docs.</li>
<li>Follow the developer <a href="https://twitter.com/Joel_James" rel="nofollow ugc">@Twitter</a></li>
<li>Other <a href="https://profiles.wordpress.org/joelcj91/#content-plugins" rel="nofollow ugc">WordPress plugins</a> by Joel James for <a href="https://duckdev.com" rel="nofollow ugc">Duck Dev</a></li>
</ul>
404 Errors and Redirect – More Details
If you are confused with these terms 404,301, redirect etc, <a href="https://moz.com/learn/seo/redirection/" rel="nofollow ugc">refer this page</a> to know more about the redirect and SEO.
<h4>Bug Reports</h4>
Bug reports for 404 to 301 are always welcome. <a href="https://duckdev.com/support/" rel="nofollow ugc">Report here</a>.

404 to 301 – Redirect, Log and Notify 404 Errors

Simple but powerful

Automatically redirect, log and notify all 404 page errors to any page using 301 redirect for SEO. No more 404 Errors in WebMaster tool.

404 Silent Salesman vs 404 to 301 – Redirect, Log and Notify 404 Errors