Detect PHP error spikes, recurring patterns, request impact and source-version changes with grouped local diagnostics.
Alternatives to 4zero4
Plugins below are selected for functional relevance and current directory signals. Active-install counts do not affect this ranking.
Relevant replacements
WordPress plugins with similar use cases
Compatibility and update metadata provide context, not a quality guarantee. Review each plugin’s details for your site.
Custom 404 Prov3.16.0
Take control of every 404 on your site — redirect visitors to a custom page or URL, log what broke, and get notified when it matters.
Monitor 404 errors, manage redirects, and show a custom 404 page with multiple templates.
Colorlib 404 Customizerv1.1.1
Replace your theme's plain 404 page with one of 20 ready-made designs, edited live in the Customizer. No code, no page builder.
Fast 301 redirect manager, 404 error monitor & safe serialized search replace for WordPress. Fix broken links and migrate domains without losing SEO.
Hide and manage external download and redirect URLs behind customizable buttons and a clean titanium.download endpoint.
< error messages > 404v1.0.3
Transform your site's 404 page into art from the < error messages > collection by m0dest.
Selective maintenance and service-status control for WordPress. Keep unaffected parts online with up to three independent Service Zones.
Redirect visitors away from broken 404 pages and send them to your homepage or any custom URL with a simple, lightweight setup.
CDN Error Mockupsv1.2.0
Create customizable Cloudflare-style error page mockups with a WordPress block.