The manufacturing industry continues to prioritize efficiency, cost-effectiveness, and safety. Extended Reality (XR) technologies, including Virtual Reality (VR), Augmented Reality (AR), and Mixed Reality (MR), are transforming the manufacturing operations by enhancing efficiency and intelligence. These technologies provide benefits such as real-time data visualization, immersive training simulations, and improved communication between operators and managers. Specifically, the integration of XR technologies into maintenance operations has emerged as a transformative area, enabling more interactive and efficient tasks through real-time data visualization and remote collaboration. While XR technologies have demonstrated immense potential for improving safety, efficacy, and operational accuracy, challenges such as high costs, limited ergonomics, and software incompatibilities hinder their widespread adoption. Additionally, much of the existing literature focuses on individual XR technologies like AR, VR, or MR rather than adopting a holistic approach that integrates these systems. By conducting a comprehensive review of XR-based technologies in maintenance, this study addresses the gap, emphasizing key components such as hardware, software, and tracking methods. The review synthesizes technological trends, limitations, challenges, and software tools, providing insights into their implementation. The analysis reveals the increasing adoption of XR technologies in maintenance, driven by their ability to enhance user efficacy while minimizing errors in manufacturing systems. The findings contribute to the body of knowledge on the importance of overcoming hardware and software barriers, reducing costs, and improving ergonomics to support XR’s effective integration within Industry 4.0 frameworks.