Augmented Reality (AR) and Virtual Reality (VR) companies are instrumental in developing and advancing these immersive technologies. Here are some well-known AR  VR companies as of my last knowledge update in September 2021:

AR Companies:

1. Niantic: Known for Pokémon GO and Ingress, Niantic specializes in location-based AR gaming and experiences.

2. Magic Leap: A company focused on mixed reality, developing AR headsets and software for various applications.

3. Epson: Offers AR smart glasses primarily for enterprise and industrial use cases, such as remote assistance.

4. PTC (Vuforia): Provides AR development tools and platforms for creating augmented reality applications, particularly in industrial and manufacturing sectors.

5. Zappar: Offers AR development tools and services for creating interactive AR content for marketing and education.

6. Blippar: Specializes in AR and computer vision technologies for advertising, branding, and retail.

7. DAQRI: Known for creating AR smart helmets and solutions for industrial applications, including maintenance and inspection.

8. Upskill (formerly Skylight): Offers AR solutions for frontline workers in fields such as manufacturing, logistics, and field service.

VR Companies:

1. Oculus (Meta Platforms, Inc.): Renowned for Oculus Rift and Quest VR headsets and a vast library of VR content.

2. HTC Vive: Develops the HTC Vive and Vive Pro VR headsets for both consumer and enterprise use.