Soft79

“Cart links for WooCommerce” allows the shop manager to create urls that will redirect the customer to a fully populated cart. This is extremely useful for email campaigns or call to action buttons. If the customer already has items in the cart, they will be kept.
The shop manager can easily create the url by populating his own shopping cart, the cart url will be displayed on the cart page. The shop manager can copy this url to the clipboard and paste it anywhere he wants, for example in a promotional email.
The url looks like this: <code>www.example.com?fill_cart=12,2x44</code> 
This url will populate the cart with 1x item with id 12, and 2x item with id 44.

Cart links for WooCommerce

Easily create a url that will populate a cart

MarcusPope

A WordPress plugin that converts all URL formats to root-relative URLs to enable seamless transitioning between staging/production host environments and debugging/testing from mobile devices, without the use of hackish tactics like textual find-replace strategies or risky hosts/NAT spoofing strategies.
With Root Relative URLs you can browse your development site from http://localhost/ or http://127.0.0.1/ or from a named network resource like http://mycomputername/ without worrying about links redirecting you back to your site’s URL.
This plugin also modifies the tinyMCE hooks so links and media embedded with built-in tools will only insert URLs from the first forward slash after the domain (i.e. the root of your site.) This means when you push content changes to a staging or production environment they are guaranteed to reference the correct target instead of accidentally referencing a production resource in development or, worse-yet, a development-exclusive resource in production.
It supports path-based MU Installations, but does not support domain-based MU sites due to architectural deficiencies in the WordPress core.
Version 1.5 fixes an infinite redirect problem that is a result of a core bug in WordPress. If you have problems with the <!–more–> tag or permalinks for custom post types, please read the FAQ or new Install Steps for support.
Version 2.2 allows for adding certain URL’s or partial URL’s to a blacklist, meaning I won’t use root relative urls, but dynamic absolute URLs instead for displaying content. This will fix problems with 3rd party plugins, and can be configured on the General Settings page.
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Root Relative URLs

Converts all URLs to root-relative URLs for hosting the same site on multiple IPs, easier production migration and better mobile device testing.

Cart links for WooCommerce vs Root Relative URLs