svenhesse

After setting two tags, you can use them like normal HTML tags in the editor (only in text mode) to enter your post in different languages. Furthermore a special switch element can be inserted.
<ul>
<li>saving the selected language using local storage</li>
<li>individual styling for switch element</li>
<li>special output in feeds</li>
</ul>

Languageswitcher

Provides tags in the editor to enter text in different languages. Readers kann toggle between these languages by using the included switch element.

Till Krüss

Credit the people behind your website in your humans.txt file. Easy to edit, directly within WordPress.
<ul>
<li>Use variables like a last-updated date, active plugins and <a href="https://wordpress.org/extend/plugins/humanstxt/other_notes/#Variables" rel="ugc">many others…</a></li>
<li>Use the <code>[humanstxt]</code> shortcode to display your humans.txt on your site</li>
<li>Add an author link tag to your site’s <code><head></code> tag</li>
<li>Allow non-admins to edit the humans.txt</li>
<li>Customize everything with custom <a href="https://wordpress.org/extend/plugins/humanstxt/other_notes/#Plugin-Actions-and-Filters" rel="ugc">filters, actions and pluggable functions</a></li>
<li>Restore previously saved revisions of your humans.txt</li>
</ul>
More information on the Humans TXT can be found on the <a href="http://humanstxt.org/" rel="nofollow ugc">official Humans TXT website</a>.
<h3>Variables</h3>
<ul>
<li><code>$wp-title$</code> – Name (title) of site/blog</li>
<li><code>$wp-tagline$</code> – Tagline (description) of site/blog</li>
<li><code>$wp-posts$</code> – Number of published posts</li>
<li><code>$wp-pages$</code> – Number of published pages</li>
<li><code>$wp-lastupdate$</code> – Date of last modified post or page</li>
<li><code>$wp-authors$</code> – Active authors and their contact details</li>
<li><code>$wp-language$</code> – WordPress language(s)</li>
<li><code>$wp-plugins$</code> – Activated WordPress plugins</li>
<li><code>$wp-charset$</code> – Encoding used for pages and feeds</li>
<li><code>$wp-version$</code> – Installed WordPress version</li>
<li><code>$php-version$</code> – Running PHP parser version</li>
<li><code>$wp-theme$</code> – Summary of the active WordPress theme</li>
<li><code>$wp-theme-name$</code> – Name of the active theme</li>
<li><code>$wp-theme-version$</code> – Version number of the active theme</li>
<li><code>$wp-theme-author$</code> – Author name of the active theme</li>
<li><code>$wp-theme-author-link$</code> – Author link of the active theme</li>
</ul>
<h3>Shortcode Usage</h3>
The default shortcode <code>[humanstxt]</code> will display the contents of the virtual humans.txt file. URLs, email addresses and Twitter account names are converted into clickable links. Plain email addresses are encoded for spam protection. The output will be wrapped with a <code></code> tag and can be styled via the <code>humanstxt</code> CSS class.
You can turn off the “clickable links” functionality: <code>[humanstxt clickable="0"]</code>
You can also toggle the clickable links individually: <code>[humanstxt urls="1" emails="0" twitter="1"]</code>
To display the humans.txt as preformatted text, use the <code>pre</code> attribute: <code><pre>[humanstxt pre="1"]</pre></code>
To display the untouched humans.txt, use the <code>plain</code> attribute: <code>[humanstxt plain="1"]</code>
You can omit the wrapping with the <code></code> tag: <code>[humanstxt wrap="0"]</code>
You can set a CSS id for the wrapping <code></code> tag: <code>[humanstxt id="my-humans-txt"]</code>
You can turn off the encoding of email addresses and common text entities: <code>[humanstxt filter="0"]</code>
<h3>Useful Functions</h3>
humanstxt() 
Echos the content of the virtual humans.txt file. Use <code>get_humanstxt()</code> to get the contents as a string.
is_humans() 
Determines if the current request is for the virtual humans.txt file.
<h3>Pluggable Functions</h3>
All callback functions of the default variables can be overridden. The callback functions are located in <a href="https://plugins.trac.wordpress.org/browser/humanstxt/trunk/callbacks.php" rel="nofollow ugc">humanstxt/callbacks.php</a>.
<h3>Plugin Constants</h3>
HUMANSTXT_METABOX 
Define as <code>false</code> to disable the “rate this plugin” box on the options page.
<h3>Plugin Actions and Filters</h3>
<h4>Actions</h4>
do_humans 
Runs when the current request is for the humans.txt file, right after the <code>template_redirect</code> action.
do_humanstxt 
Runs right before the humans.txt is printed to the screen.
<h4>Filters</h4>
humans_txt 
Applied to the final content of the virtual humans.txt file.
humans_authortag 
Applied to the author link tag.
humanstxt_content 
Applied to the humans.txt content. Applied prior to the <code>humans_txt</code> filter.
humanstxt_variables 
Applied to the array of content-variables. See <code>humanstxt_variables()</code> for details.
humanstxt_max_revisions 
Applied to the maximum number of stored revisions. If set to <code>0</code>, revisions will be disabled. Default is <code>50</code>.
humanstxt_shortcode_output 
Applied to the final <code>[humanstxt]</code> shortcode output.
humanstxt_shortcode_content 
Applied to the un-wrapped shortcode output.
humanstxt_shortcode_headline_replacement 
Applied to replacement string for matched standard headlines: <code>/* Title */</code>. See <code>humanstxt_shortcode()</code> for details.
humanstxt_shortcode_twitter_replacement 
Applied to replacement string for matched twitter account names. See <code>humanstxt_shortcode()</code> for details.
humanstxt_separator 
Applied to the global text separator. Default is a comma followed by a space.
humanstxt_plugins_separator 
Use to override the global text separator (see <code>humanstxt_separator</code> filter) for the list of active WordPress plugins.
humanstxt_languages_separator 
Use to override the global text separator (see <code>humanstxt_separator</code> filter), for the current WordPress language(s).
humanstxt_postcount 
Applied to the number of published posts: <code>$wp-posts$</code>.
humanstxt_pagecount 
Applied to the number of published pages: <code>$wp-pages$</code>.
humanstxt_wptheme 
Applied to the summary of the active WordPress theme: <code>$wp-theme$</code>.
humanstxt_plugins 
Applied to the list of active WordPress plugins: <code>$wp-plugins$</code>.
humanstxt_languages 
Applied to current WordPress language(s): <code>$wp-language$</code>.
humanstxt_lastupdate 
Applied to returned date of the <code>$wp-lastupdate$</code> variable.
humanstxt_lastupdate_format 
Applied to the used date-format of the <code>$wp-lastupdate$</code> variable. Default is <code>Y/m/d</code>. Read more about <a href="https://codex.wordpress.org/Formatting_Date_and_Time" rel="nofollow ugc">date and time formatting</a>.
humanstxt_authors 
Applied to the list of active authors: <code>$wp-authors$</code>.
humanstxt_authors_format 
Applied to the format used for the author list <code>$wp-authors$</code> variable. Please see <code>humanstxt_callback_wpauthors()</code> in <a href="https://plugins.trac.wordpress.org/browser/humanstxt/trunk/callbacks.php" rel="nofollow ugc">humanstxt/callbacks.php</a> for details.

Humans TXT

Credit the people behind your website in your humans.txt file. Easy to edit, directly within WordPress.

Languageswitcher vs Humans TXT