Capacitor is a cross-platform native runtime developed by the Ionic team that allows you to convert your existing web framework projects into native mobile apps seamlessly. With Capacitor, you can leverage your existing web development skills and codebase to create apps that run smoothly on iOS, Android, and the web. Capacitor offers rich native access, integrates easily with popular web frameworks like React, Angular, and Vue, and supports modern web APIs, making it a versatile solution for web developers looking to enter the mobile app market.