What is WordPress? A plain-English guide for 2026

WordPress is free, open-source software for building and running websites. It is a content management system (CMS): you install it on a web server, log in to a dashboard, and create pages, blog posts, menus and media without writing code. The same software runs a one-page portfolio, a local business site, a membership community or a large online store.

As of October 2026, the current version is WordPress 7.1.2, released on 22 September 2026. W3Techs reports that WordPress runs 40.2% of all websites and 58.7% of the sites whose CMS it can identify. That share has slipped from about 43% in late 2025, but WordPress is still used by more sites than every other CMS combined.

This guide explains what WordPress is today, how it works under the hood, what changed in the 7.x releases, and who it suits. If you are still deciding which version of WordPress you need, start with our explainer on WordPress.org vs WordPress.com. For everything else on the platform, see our WordPress hub.

What WordPress actually is

At its core, WordPress is a PHP application that stores your content in a MySQL or MariaDB database and turns it into web pages when someone visits. You manage everything through a browser-based admin area at yoursite.com/wp-admin.

WordPress.org describes it as open source software built around "democratizing publishing." It is released under the GPLv2 (or later), which gives you four freedoms: to run the program for any purpose, to study and change it, to redistribute it, and to distribute modified copies. In practice, that means no license fee, no vendor that can switch your site off, and the right to move your site to any host.

The word "WordPress" can refer to three related things, which causes a lot of confusion:

• WordPress (the software), downloaded free from WordPress.org and installed on hosting you choose. This is usually called "self-hosted WordPress."
• WordPress.org, the community website that hosts the download, the documentation and the free plugin and theme directories.
• WordPress.com, a commercial hosting service run by Automattic that runs the same software for you on paid or free plans.

We compare the last two in detail in WordPress.org vs WordPress.com.

How WordPress works

Every WordPress site has the same three layers.

Core

Core is the software you download. It handles users and roles, the editor, media uploads, menus, comments, URLs, the REST API and automatic updates. You should never edit core files directly, because updates overwrite them.

Themes

A theme controls how the site looks: layout, typography, colors and templates for each type of page. You can switch themes without losing your content. Twenty Twenty-Five is the current bundled default theme. There is no Twenty Twenty-Six: WordPress 6.9 skipped a default theme, and the next default, called Ipsum, is proposed for WordPress 7.2. Going forward, default themes will have their own names rather than one per year.

Modern "block themes" are built from blocks and edited in the Site Editor, so you can change headers, footers and templates visually. Older "classic themes" use PHP template files and the Customizer. Both still work.

Plugins

Plugins add features: contact forms, SEO controls, ecommerce, backups, security, booking, memberships and much more. As of 1 October 2026, the WordPress.org plugin directory lists 70,087 free plugins, and the theme directory lists about 8,700 free themes. Commercial plugins and themes are sold separately by their developers.

Plugins are where most of WordPress's flexibility comes from, and also most of its risk. Patchstack's 2026 security report found 11,334 new vulnerabilities in the WordPress ecosystem in 2025: 91% in plugins, 9% in themes and only 6 in core. Choosing well-maintained plugins and keeping them updated matters. Our guide to essential plugins covers what most business sites need.

The block editor

Since WordPress 5.0, content has been built with the block editor (originally called Gutenberg). Each paragraph, image, heading, button or gallery is a block you can move, style and reuse. Patterns are saved groups of blocks, such as a pricing section or a team grid. The Classic Editor plugin still exists for people who prefer the old interface, and it is still maintained. We cover the trade-offs in Gutenberg vs the Classic Editor.

WordPress versions in 2026

WordPress planned three major releases for 2026. Here is where things stand as of October 2026.

Two points are often reported wrongly. First, real-time collaborative editing (several people typing in the same post at once) did not ship. It was removed from 7.0 before release and is not in 7.1; the team now plans a feature plugin first, with no date. What did ship is Notes, which lets editors leave comments on individual blocks. Second, the AI Client in 7.0 does not include any AI provider and does not send prompts or data anywhere by default. A site owner or a plugin has to configure it.

Release details are on the official WordPress releases page and the WordPress 7.1 announcement.

Technical requirements

According to WordPress.org's requirements page, the recommended setup is PHP 8.3 or greater, MySQL 8.0 or greater (or MariaDB 10.11 or greater) and HTTPS. The hard minimum since WordPress 7.0 is PHP 7.4 and MySQL or MariaDB 5.5.5. Those older versions are past their end of life, so treat them as a floor, not a target.

Most hosts that advertise WordPress hosting meet the recommendation. If you plan to install it yourself, our step-by-step guide on how to install WordPress covers the options.

What you can build with WordPress

WordPress started as blogging software in 2003, but it is now a general-purpose CMS. Common uses include:

• Business and service websites: pages, contact forms, location pages, a blog for SEO.
• Online stores: WooCommerce, a free plugin, turns WordPress into a store. W3Techs reports WooCommerce on 8.0% of all websites and 47.7% of the ecommerce systems it detects.
• Publishing and news sites: roles for editors, authors and contributors, scheduling and revisions are built in.
• Membership and course sites: built with plugins for gated content, subscriptions and learning management.
• Multisite networks: one installation running many sites, used by universities and franchises.
• Headless setups: WordPress as a back end that feeds content through its REST API to a separate front end built in a framework such as Next.js.

Who uses WordPress

WordPress's user base is broad because it scales from a free plan to enterprise hosting. Bloggers and small businesses usually choose it for low cost and the size of the ecosystem. Agencies choose it because clients can edit content themselves and because skilled WordPress developers are easy to find. Publishers and large organizations often run it on managed or enterprise platforms such as WordPress VIP.

W3Techs also tracks which versions sites run: as of 1 October 2026, 63.8% of WordPress sites it detects run version 7 and 29.1% run version 6. Running an outdated version is common, and it is one of the main security risks we see.

Who builds and runs WordPress

WordPress is developed by a global volunteer and company-sponsored community. The WordPress 7.1 release credited more than 800 contributors. Mary Hubbard became WordPress Executive Director in October 2024, and Matt Mullenweg remains the leader of the project (as Hubbard put it in a September 2026 statement reported by TechCrunch). Automattic, the company Mullenweg founded, runs WordPress.com, WooCommerce and Jetpack, and sponsors contributors to core.

The ecosystem has had a turbulent two years. Automattic and Mullenweg have been in litigation with hosting company WP Engine since October 2024. According to Search Engine Journal, in late September 2026 the court allowed WP Engine's amended antitrust claims to proceed, while Automattic's trademark counterclaims also continue. The case had not settled as of 1 October 2026. None of this changes how the software works for site owners, but it has affected release planning and some plugin listings.

WordPress strengths and limits at a glance

Strengths:

• No license fee, and you own your site and data.
• The largest plugin and theme ecosystem of any CMS.
• Portable: you can move hosts at any time.
• Strong SEO foundations (clean URLs, editable titles, sitemaps built in since 5.5) plus mature SEO plugins.

Limits:

• You are responsible for updates, backups and security on self-hosted sites.
• Too many or poorly coded plugins slow sites down and add security exposure.
• Quality varies widely across third-party themes and plugins.

We go deeper in is WordPress worth it in 2026, and our WordPress security guide covers how to keep a site safe.

How much WordPress costs

The software is free, but a working website is not. You pay for hosting, a domain name, and often premium themes, plugins and professional help. Budgets range from a few dollars a month for a simple site to thousands for a custom build. See is WordPress free and how much a WordPress website costs for a full breakdown.

Conclusion

WordPress is open-source software that lets you build almost any kind of website and keep full control of it. In 2026 it is on its 7.x series, with an updated dashboard, a growing block editor and new media and AI foundations, while real-time collaboration is still in development. It is still the most widely used CMS by a wide margin, even as its share has dipped. If you want help planning, building or maintaining a WordPress site, our team at eSEOspace offers WordPress development services.

Frequently asked questions