WP LibreJS

Offers your blog visitors a firefox download button in different formats and colors on the sidebar.

A plugin that will log JavaScript-errors that occurs on the front-end of your website. Errors are logged to a non-public custom post type.

Browser Blocker allows you to pick and choose which browsers(versions) can access your web page and which ones are given a blocked splash screen.

JinX gives you the ability to separate any javascript you may have from your blog posts and pages. It provides a separate textarea for adding javasc …

This plugin will display a warning message if the browser's Javascript is disabled. No set up is required, just install and activate.

Simple and lightweight plugin for inserting custom javascript code for specific posts or pages.