Tenseg LLC

This plugin will look at another site you specify whenever a 404 error occurs and check if the requested path is there. If the path is found, it will redirect there rather than show the WP 404 page.
This is particularly useful to silently redirect over to an archival copy of a website when a major redesign has been done.
More information about this plugin can be found <a href="https://www.tenseg.net/software/404sitechecker" rel="nofollow ugc">on its homepage</a>.

404 Site Checker

When you get a 404 this will check the requested path at a site you define and redirect there if found rather than showing the 404.

stayallive

This plugin can report PHP errors and Browser (JavaScript) errors to Sentry.
It will auto detect authenticated users and add context where possible. All context/tags can be adjusted/expanded using filters.
For more information and documentation have a look at the <a href="https://github.com/stayallive/wp-sentry/tree/v8.10.0#readme" rel="nofollow ugc">full documentation</a>.
<h3>Contributors</h3>
See: <a href="https://github.com/stayallive/wp-sentry/graphs/contributors" rel="nofollow ugc">github.com/stayallive/wp-sentry/graphs/contributors</a>

Sentry for WordPress

Perfect, this just works perfectly with zero setup. Fantastic!

Works great

WP Sentry is a great integration of Sentry for WP needs with extensive documentation which is easy to use. And in case you need it the support is great. Thanks a lot, Alex!

Great integration for WP

This plugin is fantastic. It is simple and fast, and it does exactly what it needs to, with no extra fluff.

Also, the support is top-tier. Alex responded with an immediate solution.

Simple and effective, top-support

A (unofficial) WordPress plugin to report PHP errors and Browser (JavaScript) errors to Sentry.

404 Site Checker vs Sentry for WordPress