DCoda

This plugin is only supported on PHP 5.2 or greater.
 
ExportReaders easily allows you to export your users details for use elsewhere. 
Just select the roles you with to export and set the criteria to select the commenters and download its that simple. 

If you are having trouble and cannot find the answers in the <a href="http://exportreaders.dcoda.co.uk/help/faq/" rel="nofollow ugc">FAQ</a> you can post your support questions to the <a href="https://wordpress.org/tags/export-readers" rel="ugc">WordPress Support Forum</a>
If you find ExportReaders useful please rate it at <a href="https://wordpress.org/extend/plugins/export-readers/" rel="ugc">wordpress.org</a> and please consider making a <a href="http://exportreaders.dcoda.co.uk/donate/" rel="nofollow ugc">donation</a> to help us set aside more hours to maintain ExportReaders
ExportReaders is written by <a href='http://dcoda.co.uk' rel="nofollow ugc">dcoda</a>
You can check out our other plugins <a href="https://profiles.wordpress.org/users/dcoda/" rel="nofollow ugc">here</a>
If you require a custom plugin you can contact us <a href="http://dcoda.co.uk/contact/" rel="nofollow ugc">here</a> and maybe we could write it for you.
<h3>Copyright</h3>
(c) Copyright DCoda Limited, 2007 -, All Rights Reserved.
This code is released under the GPL license version 2, available here:
<a href="http://www.gnu.org/licenses/gpl.txt" rel="nofollow ugc">http://www.gnu.org/licenses/gpl.txt</a>
There are so many possibly configurations of installation the plugin can be installed on we limit testing to a PHP 5.2+ Linux platform running the latest version of WordPress at the time of release but it is released WITHOUT ANY WARRANTY; 
 without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

ExportReaders

Selectively export all your reader details ( users and commenters )

jcollings

ImportWP

Import and Export WordPress data with ease using Import WP, a WordPress import export plugin that works with any XML or CSV file, there are no special requirements for how your csv file is laid out, or the structure of your xml file. Import WP’s xml and csv import process can handle it all.
XML and CSV import files can be fetched from a remote URL, datafeed or FTP server, downloaded from Google Sheets, or manually uploaded to the importer.
Import WP comes with an intuitive data selection tool that makes it simple to select and map any WordPress field to any part of your xml or csv file.
Import WP allows you to import into all core WordPress data types from WordPress posts, pages, categories, tags, users and attachments, we offer many free addons that allow integration for third party plugins, and a premium upgrade to import into any custom post type, custom taxonomy, or custom fields.
Our optimised WordPress importer makes it easy to export and import CSV and XML files into WordPress posts, pages, categories, and tags. We have simplified the process to Import attachments, images, and any WordPress data using our custom visual data selection tools that make it straightforward to import XML or CSV files from any data feed.
Our WordPress exporter allows you to export CSV, XML or JSON files with data from any wordpress post type or taxonomy, including exporting custom fields, images, attachments, and related terms. This means you can easily export CSV, XML or JSON files containing only the WordPress data and structure you need.
<h4>Import CSV and XML files to WordPress posts, categories and users</h4>
To create a csv importer or xml importer the steps are the same, except that xml files contain a nested data structure, instead of csv files that containing rows and headings.
<ol>
<li>Choose Import file – Import an XML or CSV file by either uploading a file, downloading from a remote url, or from a remote FTP.</li>
<li>Map data – Select what parts of your import file should be used to create and update a WordPress record.</li>
<li>Set Permissions – Set what is used to identify each record, and select what the importer can insert, update and delete.</li>
<li>Run the importer.</li>
</ol>
<h4>Import WordPress Attachments from XML / CSV files</h4>
Import WordPress attachments from CSV and XML files from either a remote url, an ftp server, the websites filesystem, or the WordPress media library.
Attachments can be downloaded every time the importer runs, or can check the media library to use an existing version if it exists already, saving media from downloading duplicate images.
<h4>WordPress CSV and XML Importer features</h4>
<ul>
<li>Simple XML data selection tool to Import XML files.</li>
<li>Easy to use CSV data selection tool to import CSV files.</li>
<li>Import data from remote urls and data feeds.</li>
<li>Import data from an FTP server</li>
<li>Import data from files stored on the web server.</li>
<li>Import data to WordPress posts and pages</li>
<li>Import categories and tags.</li>
<li>Import Attachments from Remote URL</li>
<li>Import Attachments from FTP server</li>
<li>Import Attachments from local filesystem</li>
<li>Import Attachments from Media Library.</li>
<li>Import Attachment title, caption, alt tag metadata.</li>
</ul>
<h4>WordPress Exporter features</h4>
<ul>
<li>Export all available fields, or select which WordPress data to export.</li>
<li>Create nested XML files containing repeating data.</li>
<li>Customise CSV file headings</li>
<li>Customise XML node names and attribute labels.</li>
<li>Filter which records are exported</li>
</ul>
<h4>Product Import Export for WooCommerce Add-on</h4>
The free <a href="https://www.importwp.com/integrations/import-export-woocommerce-plugin/?utm_campaign=Import%2BWP%2BPro%2BUpgrade&utm_source=wordpress.org&utm_medium=free%2Bplugin%2Blisting" rel="nofollow ugc">Import WP WooCommerce add-on extends</a> Import WP’s XML and CSV import capabilities allowing to Export and Import WooCommerce products.
<ul>
<li>Export WooCommerce products into CSV, XML or JSON files</li>
<li>Import WooCommerce products from CSV and XML</li>
<li>Import and Export simple, grouped, external, variable and variation products.</li>
<li>Export and import WooCommerce products and images including featured product images and gallery images.</li>
<li>Export and Import product categories including hierarchy.</li>
<li>Export and Import WooCommerce product attributes, categories and tags</li>
<li>Export and import product prices and stock levels.</li>
</ul>
A number of add-ons are available to add functionality to the importer / exporter.
<ul>
<li>Advanced Custom Fields ACF Add-on – ACF XML & CSV data importer and exporter.</li>
<li>JetEngine Add-on – JetEngine XML & CSV data importer and exporter.</li>
<li>WooCommerce Add-on – XML & CSV Importer and Exporter for all WooCommerce product types.</li>
<li>Rank Math SEO Add-on – XML & CSV Importer for Rank Math SEO metadata.</li>
<li>Yoast SEO Add-on – XML & CSV Importer for Yoast SEO metadata.</li>
<li>Polylang Add-on – XML & CSV Importer for Polylang translations.</li>
<li>BLM file importer Add-on – BLM file and media Importer.</li>
</ul>
Find out more <a href="https://www.importwp.com/integrations/?utm_campaign=Import%2BWP%2BPro%2BUpgrade&utm_source=wordpress.org&utm_medium=free%2Bplugin%2Blisting" rel="nofollow ugc">about Import WP Add-ons</a>.
<h4>What is Import WP Pro?</h4>
Import WP Pro is a paid upgrade that includes premium support and adds the following extra features:
<ul>
<li>Import data to custom fields – used by themes and plugins to store custom data associated with posts.</li>
<li>Import data to WordPress custom post types.</li>
<li>Import data to WordPress custom taxonomies</li>
<li>Schedule importers</li>
</ul>
Find out more <a href="https://www.importwp.com/?utm_campaign=Import%2BWP%2BPro%2BUpgrade&utm_source=wordpress.org&utm_medium=free%2Bplugin%2Blisting" rel="nofollow ugc">about Import WP Pro on our website</a>.

Import WP – Export and Import CSV and XML files to WordPress

Import WP, a simple, fast and powerful XML and CSV import solution, Making it easy to import posts, pages, categories, tags, users and attachments.

ExportReaders vs Import WP – Export and Import CSV and XML files to WordPress