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Best WordPress Theme and Plugin Development Tools

By ali 9 min read

WordPress theme and plugin development tools for coding, debugging, and testing

Developing WordPress themes and plugins requires more than writing PHP code. A good development setup also includes a code editor, a local WordPress environment, debugging tools, database management software, browser developer tools, and version control.

Whether you are building your first WordPress theme or developing complex plugins for clients, the right tools can make your work easier. They help you write cleaner code, identify errors, test functionality, manage databases, and maintain projects.

This guide covers useful software and development tools for WordPress developers, along with several older tools from the original list that are now deprecated or have been replaced by newer alternatives.

1. Code Editors and PHP Development IDEs

A code editor or integrated development environment (IDE) is one of the most important tools in a WordPress development setup. You will use it to edit PHP, JavaScript, CSS, HTML, and WordPress theme or plugin files.

  • PhpStorm: A commercial PHP IDE with code completion, debugging, refactoring, database tools, and WordPress development support. It is a useful choice for developers working on large projects.
  • Visual Studio Code: A popular code editor with extensions for PHP, JavaScript, Git, and WordPress development. It can be customized for different development workflows.
  • Notepad++: A lightweight Windows text editor suitable for quick edits to PHP, HTML, CSS, and configuration files. It does not provide the same integrated development features as a full IDE.

For regular WordPress theme and plugin development, PhpStorm and Visual Studio Code are strong options. Choose the editor that fits your project size and working style.

2. PHP Debugging and Profiling Tools

Debugging tools help you identify PHP errors, inspect variables, follow function calls, and investigate performance problems.

  • Xdebug: A PHP extension that provides step debugging, stack traces, code coverage, and profiling features. It is useful when investigating complicated PHP issues.
  • Query Monitor: A WordPress debugging plugin that helps developers inspect database queries, PHP errors, hooks, HTTP requests, scripts, styles, and other information.
  • Debug Bar: Adds a debugging menu to the WordPress admin bar and provides information about queries, cache, and other debugging details through supported extensions.
  • WordPress debug logging: WordPress includes debugging constants that can help record PHP notices, warnings, and errors during development.

For example, you can enable WordPress debugging in your local development environment by adding these constants to wp-config.php:

define( 'WP_DEBUG', true );
define( 'WP_DEBUG_LOG', true );
define( 'WP_DEBUG_DISPLAY', false );

With this configuration, WordPress writes debugging messages to its debug log instead of displaying them directly on the website. Avoid enabling public error display on a live production website.

3. Local WordPress Development Environments

A local development environment allows you to install WordPress on your computer without publishing the website online. You can build themes, test plugins, change database settings, and troubleshoot errors safely.

Here are some commonly used local development options:

  • Local: A desktop application designed to make creating and managing local WordPress websites easier.
  • XAMPP: A local server package that includes Apache, MariaDB, PHP, and other components. It can be used to run WordPress locally.
  • MAMP: A local web development environment available for macOS and Windows.
  • WampServer: A Windows-based environment for running Apache, PHP, and MySQL or MariaDB.
  • Docker: A container platform that lets developers create consistent development environments with configurable PHP, database, and web server versions.
  • Vagrant: A tool for creating and managing reproducible virtual development environments.

For beginners, Local is a convenient way to get started with WordPress development. Developers who need more control over server configuration may prefer Docker or a manually configured environment.

4. Database Management Tools

WordPress stores website content, settings, users, and other information in a database. A database management tool helps you inspect tables, run SQL queries, export data, and troubleshoot database-related problems.

  • HeidiSQL: A database client that supports MySQL, MariaDB, and other database systems. It provides a graphical interface for managing databases and running queries.
  • phpMyAdmin: A browser-based database administration tool commonly included with local PHP development environments and hosting control panels.
  • DBeaver: A database management application that supports many database systems, including MySQL and MariaDB.

These tools are useful when you need to inspect WordPress tables, review stored values, or run database queries while developing a theme or plugin.

Always back up your database before making direct changes. Editing WordPress database records without understanding their relationships can cause problems with your website.

5. File Transfer and Backup Tools

WordPress developers often need to transfer files between a local computer and a remote server. File transfer tools can also help synchronize folders and manage backups.

  • WinSCP: A Windows file transfer client that supports protocols such as SFTP and SCP. It is useful for transferring theme and plugin files to a server.
  • Cyberduck: A file transfer application that supports FTP, SFTP, and several cloud storage services.
  • Dropbox: A cloud storage service that can be used to store project files and backup copies. It should not be treated as a replacement for a complete website backup system.

When transferring files to a live WordPress website, use a secure connection such as SFTP whenever possible. Keep a separate backup of your database and website files before making major changes.

6. WordPress Theme Development Tools and Frameworks

Theme development frameworks and starter themes provide a foundation for building WordPress themes. They can help organize templates, stylesheets, functions, and reusable components.

  • Underscores: A starter theme project that provides a basic structure for developing a custom WordPress theme.
  • Genesis Framework: A WordPress theme framework historically used for building child themes and managing theme functionality. Check its current product and support status before choosing it for a new project.
  • Beans Framework: A theme framework that appeared in older WordPress development tool lists. Check its maintenance status and compatibility before using it in a new project.
  • Hybrid Core: A theme development framework that has been used to build WordPress themes with reusable components. Verify current maintenance and compatibility before adopting it.

For a new theme project, also consider using a modern block theme or a custom theme based on the current WordPress theme development standards.

The official WordPress Theme Developer Handbook is a useful starting point for learning about theme structure, templates, styles, and theme features.

7. WordPress Plugin Development Tools and Frameworks

Plugin development tools help you organize PHP code, register hooks, manage settings, and build reusable functionality.

  • WordPress Plugin Boilerplate: A starter structure for organizing plugin files, classes, activation hooks, deactivation hooks, and related functionality.
  • Pluginception: A plugin that can generate a basic plugin structure from the WordPress admin area. Check its current compatibility before using it.
  • Carbon Fields: A library for adding custom fields and metadata to WordPress content types and other areas.
  • Redux Framework: A framework historically used to create settings panels and configuration interfaces in WordPress themes and plugins. Check its current documentation and licensing before adopting it.

You can also build a plugin without using a framework. WordPress already provides hooks, filters, settings APIs, custom post types, and other functions that cover many common development requirements.

If you are new to plugin development, see our tutorial on how to create a custom plugin in WordPress.

For official guidance, refer to the WordPress Plugin Developer Handbook.

8. Browser Developer Tools

Browser developer tools are essential when working with WordPress front-end functionality. They help you inspect HTML, debug JavaScript, review CSS, monitor network requests, and identify layout problems.

  • Chrome DevTools: Provides tools for inspecting page elements, debugging JavaScript, monitoring network activity, and analyzing website performance.
  • Firefox Developer Tools: Includes an inspector, JavaScript debugger, network monitor, and other development features.
  • Safari Web Inspector: Helps developers inspect and debug websites in Safari.
  • Microsoft Edge Developer Tools: Provides browser inspection and debugging features based on Chromium developer tools.

You can use these tools to inspect a WordPress page, identify CSS conflicts, check JavaScript errors, and investigate why a theme or plugin feature is not working as expected.

9. Website Performance and SEO Tools

Performance and SEO tools help you identify issues that may affect page loading, usability, and search visibility.

  • Google PageSpeed Insights: Analyzes page performance and provides suggestions for improving loading speed and user experience.
  • Lighthouse: An open-source tool for auditing performance, accessibility, SEO, and other aspects of web pages.
  • Google Search Console: Helps website owners monitor search performance, indexing, and technical search issues.

Older tools such as YSlow and the original PageSpeed browser extensions appeared in many WordPress development lists. They should be treated as historical tools rather than the preferred options for a new development setup.

10. Version Control Tools

Version control helps you track code changes, compare revisions, collaborate with other developers, and restore earlier versions when something goes wrong.

  • Git: A distributed version control system used to track changes in source code.
  • GitHub: A platform for hosting Git repositories, reviewing code, managing issues, and collaborating on projects.
  • GitLab: A platform that provides Git repository hosting, code review, and development workflow features.
  • Bitbucket: A Git repository hosting service with collaboration and code management features.

Using Git for WordPress theme and plugin development makes it easier to track changes and manage different versions of a project. You can also create a separate branch for testing new features before merging them into your main codebase.

11. Older WordPress Development Tools to Treat as Deprecated

Some tools in older WordPress development lists are no longer maintained, have been replaced, or are not suitable for modern development workflows. You may still find references to them in older tutorials, but they should not automatically be included in a new setup.

  • Firebug: An older Firefox development extension. Modern Firefox Developer Tools provide similar browser inspection and debugging features.
  • Internet Explorer Collection: A historical collection of Internet Explorer versions. Internet Explorer is retired, so modern browser testing should focus on currently supported browsers.
  • MySQL Query Browser: An older database tool. Consider HeidiSQL, DBeaver, or another maintained database client instead.
  • NetBeans: A development IDE that was previously used for PHP projects. PhpStorm and Visual Studio Code are other options to consider.
  • eAccelerator: An older PHP accelerator that is not a recommended choice for modern PHP development.
  • MoWeS: A portable local server package from an earlier generation of WordPress development tools. Use a maintained local environment instead.
  • PHPXref: An older PHP code navigation tool. Modern IDEs provide code navigation and reference searching.
  • WebGrind: A profiler interface historically used with Xdebug. Check current compatibility before including it in a modern profiling workflow.
  • WP Tuner: An older WordPress performance profiling plugin that should not be relied on for current WordPress projects.
  • Codestyling Localization: An older localization plugin. For modern translation workflows, review the current WordPress internationalization documentation and supported translation tools.

Before installing any older plugin or framework, check its last update, supported WordPress and PHP versions, documentation, and maintenance activity.

You do not need every tool listed in this article to develop WordPress themes and plugins. A small, reliable setup is often enough to start.

Here is a practical combination:

  • Code editor: PhpStorm or Visual Studio Code.
  • Local environment: Local or Docker.
  • PHP debugging: Xdebug.
  • WordPress debugging: Query Monitor.
  • Database management: HeidiSQL, DBeaver, or phpMyAdmin.
  • Browser testing: Chrome DevTools and Firefox Developer Tools.
  • Version control: Git and GitHub.
  • Performance testing: PageSpeed Insights and Lighthouse.

This setup covers most everyday WordPress development tasks, from writing code and testing locally to debugging errors and managing project changes.

Conclusion

Choosing the right development software can make WordPress theme and plugin development more organized and efficient. A good code editor, local environment, debugging tools, database client, and version control system provide a solid foundation for most projects.

Some tools from older WordPress development lists are now outdated or have been replaced by modern alternatives. Before using any software, check its current maintenance status and compatibility with your PHP and WordPress versions.

Start with the tools that solve your immediate development needs. You can add more advanced software as your projects become larger and your workflow requires it.

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