stratosg

Writing a post with footnotes has never been easier and cleaner before. All you need to do is anchor a footnote at any point and then write it on the end of the paragraph or wherever it fits you.
Usage
To anchor a footnote use the {{FOOTNOTE_NUMBER}}. Then to write the body of it you need to embrace it with [[FOOTNOTE_NUMBER]]. Here is an example:
—— document starts here ——- 
Lorem ipsum dolor sit amet, con sectetuer adipiscing elit, sed diam 
tempor incidunt ut labore et dolore magna ali quarn erat volupat.{{1}} 
venian, quis nostrud exerci tation ullamcorper{{2}} suscipit laboris 
commodo consequat. Duis autem vel eum irure dolore
[[1]]This is the first footnote.[[1]] 
[[2]]This is the second footnote.[[2]]
This is the next paragraph. Lorem ipsum dolor sit amet, con sectetuer 
adipiscing elit, sed diam nonnumy nibh euismod tempor incidunt ut 
labore et dolore magna ali quarn erat volupat. Ut wisi enim ad minim. 
—— document ends here ———
When the document is parsed, the footnotes that are between paragraphs will be removed from where they are and placed at the end of the document. The {{1}} will be replaced with an anchor link to the footnote. The footnotes will be a list having and anchor link back to the place the text has it. Here is what roughly the above text will look like after parsing:
—— document starts here ——- 
Lorem ipsum dolor sit amet, con sectetuer adipiscing elit, sed diam 
tempor incidunt ut labore et dolore magna ali quarn erat volupat.[1] 
venian, quis nostrud exerci tation ullamcorper[2] suscipit laboris 
commodo consequat. Duis autem vel eum irure dolore
This is the next paragraph. Lorem ipsum dolor sit amet, con sectetuer 
adipiscing elit, sed diam nonnumy nibh euismod tempor incidunt ut 
labore et dolore magna ali quarn erat volupat. Ut wisi enim ad minim.
FOOTNOTES 
1. This is the first footnote. 
2. This is the second footnote. 
—— document ends here ———
The up arrows and the [1] and [2] are the links. There are a few options that you can tweak, for now it’s in the code. Please refer to the plugin’s homepage at: http://www.stratos.me/wp-plugins/yafootnotes
<h3>Requirements</h3>
None what so ever…
<h3>Credits</h3>
Mr. Mike Nichols from http://anxietypanichealth.com/ inspired me, motivated me and helped me debug.
<h3>Contact</h3>
Suggestion, fixes, rants, congratulations, gifts etc to stratosg@stratosector.net 
Also visit the plugin’s page at http://www.stratos.me/wp-plugins/yafootnotes/

YAFootnotes

Yet Another Footnotes (YAFootnotes) is a plugin that gives you the ability to add footnotes to any text you are writing.

acusti

The <a href="https://wordpress.org/plugins/simple-footnotes/" rel="ugc">Simple Footnotes</a> plugin allows you to add simple, elegant footnotes on your site.
This tiny plugin makes it incredibly simple to create those footnotes, leaving nothing to teach the site’s editors (no need to explain shortcodes or special syntaxes). It adds a button to the TinyMCE editor toolbar in the second row (i.e. the “Kitchen Sink”) that users can click to open a textarea overlay where they can enter the footnote content and then insert it into the editor with the proper syntax.
<h3>Translation</h3>
<ul>
<li>French</li>
</ul>

Simple Footnotes Editor Button

Add a button to the TinyMCE editor toolbar to make it easy for users to add footnotes with the proper syntax for the Simple Footnotes plugin.

YAFootnotes vs Simple Footnotes Editor Button