Extended Reality (XR) encompasses a spectrum of technologies, including Virtual Reality (VR), Augmented Reality (AR), and Mixed Reality (MR). Key players include Meta, with its range of VR headsets (Quest 2, Quest 3, Quest 3S, Quest Pro) and the social VR platform Horizon Worlds; Apple, with its high-end Vision Pro headset; Microsoft, known for its HoloLens enterprise solutions; Google, focusing on integrated AR experiences through ARCore and Google Lens; Snap, popularizing AR filters on its Snapchat platform; Niantic, specializing in location-based AR games like Pokémon Go; and Magic Leap, developing advanced MR technologies for enterprise applications. This dynamic landscape is constantly evolving with new entrants and innovative technologies emerging, promising an exciting future for XR.