O'Reilly Media is one of the oldest and most authoritative technical book publishers in software, founded in 1978 by Tim O'Reilly. The publisher has shaped the field's literature for over four decades — the animal books series anchored a generation of working developers' learning, and the modern O'Reilly Online Learning platform extends that catalog into video, live training, and interactive sandboxes.
The CourseFlix listing carries two O'Reilly titles: Learn Database Design with MySQL and Streaming Databases. The catalog represented here is a small slice of O'Reilly's broader library, which spans essentially every active technology track from foundational CS through emerging fields like AI engineering and platform engineering.
Material is paid; O'Reilly Online Learning runs on a monthly / annual subscription on the original platform. Courses are aimed at working professionals across software, IT, and adjacent technical disciplines.