Mac OS X Softwares to OPML Import/Export

ReadKit is a comprehensive read-later and RSS client for macOS, integrating with popular services like Instapaper, Pocket, and Feedly. It offers offline reading, built-in browser, and robust feed management for an organized reading experience.

Downcast is a leading podcast player available across Apple's ecosystem, including iOS, macOS, Apple Watch, and CarPlay. It offers robust features for discovering, subscribing to, and managing your favorite podcasts with seamless synchronization.

Aktuell is a native RSS and Atom feed reader for macOS, designed to provide a clean and focused news consumption experience. It supports offline reading, OPML import/export, Pocket integration, and features a built-in web browser for reading articles without leaving the application.