KevinJCandlert

This is the easiest way to add custom css and/or javascript to your site. Two large windows with css and javascript syntax highlighting makes it super easy to read and write code. 
JK Development console also uses AJAX to save the css and javascript data – meaning that the page won’t reload and you can keep on working without have to look for that last spot you edited.
Hope you like it! 🙂
Syntax highlightning by ACE (http://ace.c9.io/).

JK Development Console

A development console for adding custom javascript and CSS.

Jeff Stieler

Embed a console for exploring REST APIs in your content.
Based on Automattic’s WordPress.com Console.
For the console to work properly, the target API will need to: 
* respond to versioned requests, specified in the URL (e.g. <code>/api/v1/endpoint</code>) 
* expose a <code>/versions</code> endpoint to provide metadata about the API\’s different versions 
* response example here 
* expose a <code>/help</code> endpoint to provide metadata about the API’s endpoints 
* response example here

REST Console Embed

Shortcode for an embeddable REST API Console, based on Automattic's WordPress.com Console.

JK Development Console vs REST Console Embed