Automatic-rock

This plugin adds some SVG functionality to your WordPress and uses a SVG technique that’s based on an idea by Alexey Ten and used by Jens Kuerschner which was my starting point for this plugin. 
This way of including SVG images into HTML seems to be the one with the best combination of performance and compatibility at the moment. 
Upload SVG files to your WordPress and add them to your post or pages via the SVG button in your visual editor. Here you can even select to have zoom and pan (mouse drag) on your svg, useful for maps for example. You can also set image size, a fallback image and an alt text for SEO
List of Features:
<ul>
<li>Upload SVG files to your media library</li>
<li>Use SVG files via a TinyMCE bytton or by shortcode in your posts or pages</li>
<li>Option to add captions to your SVG images</li>
<li>Option to set zoom and drag on svg images (by mouse and buttons)</li>
<li>Option to set a CSS class</li>
<li>Option to define a fallback image (usually PNG) for your SVG</li>
<li>Option to add alt-information for SEO</li>
</ul>
Example: 
[svg-complete align=”aligncenter” class=”my_own_class” svg_path=”http://upload.wikimedia.org/wikipedia/commons/9/95/World_map_frigid.svg” alt_path=”www.mysite.com/images/worldmap.png” alt=”wiki world map” width=”760″ height=”400″ zoompan=”zoom_button”]Wiki Worldmap[/svg-complete]
See http://www.automatic-rock.nl/svg-zoom-pan-drag-wordpress/ for a complete instruction and examples

SVG Complete

Upload SVG files and add them to your post or page via the SVG button in your visual editor or via a shortcode, with zoom & drag option!

Extend Themes

Horea Radu

The Mesmerize Companion plugin adds drag and drop page builder functionality to the Mesmerize theme.
The Mesmerize Companion plugin features include:
<ul>
<li>Beautiful ready-made homepage</li>
<li>Drag and drop page customization</li>
<li>30+ predefined content sections</li>
<li>Live content editing </li>
<li>and many other features</li>
</ul>
<h3>License</h3>
Mesmerize Companion WordPress plugin, Copyright (C) 2017 Horea Radu 
Mesmerize Companion WordPress plugin is licensed under the GPL3 (https://www.gnu.org/licenses/gpl-3.0.en.html).
Unless otherwise specified, all the theme files and scripts are licensed under GNU General Public License.
The exceptions to this license are as follows:
<ul>
<li>
Hammer.JS – v2.0.8 – http://hammerjs.github.io/ 
Licensed under the MIT license (https://opensource.org/licenses/MIT) 
Copyright (c) Jorik Tangelder;
</li>
<li>
countUp.js @inorganik – https://github.com/inorganik/countUp.js 
Licensed under the MIT license (https://opensource.org/licenses/MIT)
</li>
<li>
Backstretch – http://srobbin.com/jquery-plugins/backstretch/ 
Copyright (c) 2013 Scott Robbin 
Licensed under the MIT license (https://opensource.org/licenses/MIT)
</li>
<li>
modernizr v3.3.1 – https://modernizr.com/download?-setclasses-dontmin 
Licensed under the MIT license (https://opensource.org/licenses/MIT) 
Copyright (c) Faruk Ates, Paul Irish, Alex Sexton, Ryan Seddon, Patrick Kettner, Stu Cox, Richard Herrera
</li>
<li>
Spectrum Colorpicker v1.8.0 – https://github.com/bgrins/spectrum 
Licensed under the MIT license (https://opensource.org/licenses/MIT) 
Copyright (c) Brian Grinstead
</li>
<li>
SpeakingURL – https://github.com/pid/speakingurl 
Licensed under the BSD3 license (https://opensource.org/licenses/BSD-3-Clause) 
Copyright (c) 2013-2017 Sascha Droste <a href="mailto:pid@posteo.net" rel="nofollow ugc">pid@posteo.net</a>
</li>
<li>
Kirki by Aristeides Stathopoulos – https://github.com/aristath/kirki 
Licensed under the MIT license (https://opensource.org/licenses/MIT)
</li>
<li>
Images
</li>
</ul>
The following images used in the plugin are distributed under Creative Commons Zero license, http://creativecommons.org/publicdomain/zero/1.0/
<pre><code>* theme-data/mesmerize/sections/images/about-img-5.jpg
Source: https://pixabay.com/en/urban-people-crowd-citizens-438393/

* theme-data/mesmerize/sections/images/apple-1838564-big.jpg
Source: https://pixabay.com/en/apple-black-business-desk-keyboard-1838564/

* theme-data/mesmerize/sections/images/apple-1838564.jpg
Source: https://pixabay.com/en/apple-black-business-desk-keyboard-1838564/

* theme-data/mesmerize/sections/images/background-2498615.jpg
Source: https://pixabay.com/en/background-red-gloss-art-color-2498615/

* theme-data/mesmerize/sections/images/computer-2569652.jpg
Source: https://pixabay.com/en/computer-keyboard-apple-electronics-2569652/

* theme-data/mesmerize/sections/images/laptop-2559795.jpg
Source: https://pixabay.com/en/laptop-apple-macbook-computer-2559795/

* theme-data/mesmerize/sections/images/mockup-863469.jpg
Source: https://everypixel.com/image-1191756555950098452

* theme-data/mesmerize/sections/images/people-2605526.jpg
Source: https://pixabay.com/en/people-girl-beauty-face-eyebrow-2605526/

* theme-data/mesmerize/sections/images/team-1.jpg
Source: https://www.pexels.com/photo/beautiful-beauty-black-and-white-face-432588/

* theme-data/mesmerize/sections/images/team-2.jpg
Source: https://www.pexels.com/photo/adult-business-businessman-close-up-428339/

* theme-data/mesmerize/sections/images/team-3.jpg
Source: https://www.pexels.com/photo/attractive-beautiful-beauty-casual-206560/

* theme-data/mesmerize/sections/images/team-4.jpg
Source: https://www.pexels.com/photo/adult-attractive-beanie-beautiful-355022/

* theme-data/mesmerize/sections/images/team-5.jpg
Source: https://www.pexels.com/photo/men-s-black-coat-with-white-polo-shirt-213117/

* theme-data/mesmerize/sections/images/team-6.jpg
Source: https://pixabay.com/en/model-female-girl-beautiful-woman-429733/

* theme-data/mesmerize/sections/images/team-7.jpg
Source: https://www.pexels.com/photo/portrait-of-young-man-in-autumn-247917/

* theme-data/mesmerize/sections/images/team-8.jpg
Source: https://pixabay.com/en/fashion-woman-clothing-female-1623088/

* theme-data/mesmerize/sections/images/urban-438393.jpg
Source: https://pixabay.com/en/urban-people-crowd-citizens-438393/

* theme-data/mesmerize/sections/images/woman-1209584.jpg
Source: https://pixabay.com/en/woman-portrait-face-beautiful-1209584/
</code></pre>
The following images are exported from Font Awesome
Font Awesome 4.7.0 by @davegandy – http://fontawesome.io – @fontawesome 
License – http://fontawesome.io/license (Font: SIL OFL 1.1, CSS: MIT License)
<pre><code>* customizer/assets/icons/brush-hover.png
* customizer/assets/icons/brush.png
* customizer/assets/icons/check.png
* customizer/assets/icons/chevron-right.png
* customizer/assets/icons/close.png
* customizer/assets/icons/cog-white.png
* customizer/assets/icons/cog.png
* customizer/assets/icons/plus-black.png
* customizer/assets/icons/plus.png
* customizer/assets/icons/slash.png
* customizer/assets/icons/swap.png
* customizer/assets/icons/toggle-menu-active.png
* customizer/assets/icons/toggle-menu.png
* customizer/assets/icons/toolbar-cog.png
* customizer/assets/icons/trash-o.png
* customizer/assets/icons/trash.png
* customizer/assets/icons/up-down.png
</code></pre>
The following images are the creation of Horea Radu and are distributed under the Creative Commons Zero License, http://creativecommons.org/publicdomain/zero/1.0/
<pre><code>* theme-data/mesmerize/sections/images/logo1.png
* theme-data/mesmerize/sections/images/logo2.png
* theme-data/mesmerize/sections/images/logo3.png
* theme-data/mesmerize/sections/images/logo4.png

* sections/images/quote.png
* customizer/assets/icons/reorder-handler.png
</code></pre>

Mesmerize Companion

The Mesmerize Companion plugin adds drag and drop page builder functionality to the Mesmerize theme.

SVG Complete vs Mesmerize Companion