Create A WordPress Plug-in

WordPress powers over half the websites online today, and its plugin marketplace allows developers to sell useful features to millions of users. If you can create a plugin that solves a specific problem for website owners, you can sell it as a subscription or one-time purchase.

WordPress plugins are usually built with PHP, a beginner-friendly language. You can learn to code yourself or hire a developer to help bring your vision to life. Once launched, plugins can generate recurring income without much ongoing work beyond updates and support.