Universal Viewer Alternatives for Mac OS X

Firefox PDF Viewer (PDF.js) is an open-source, web standards-based PDF viewer embedded directly within the Firefox browser. It allows users to view PDF documents seamlessly without the need for external software or plugins, enhancing browser-based document handling and accessibility.

DivX is a comprehensive set of software tools centered around high-quality video playback, conversion, and casting. It's known for enabling efficient video compression while preserving visual fidelity, offering features like 4K support, subtitle management, and seamless streaming to devices.

Mylio helps you organize, protect, and access your photos and videos across all your devices without relying solely on cloud storage. It leverages a unique approach to keep your entire library synchronized and accessible, offering powerful organization, editing, and sharing tools.

glogg is a powerful, multi-platform log file viewer and analyzer. It is designed for browsing and searching through large and complex log files efficiently, offering features like real-time monitoring, text highlighting, and content filtering.

SmoothVideo Project (SVP) is a software utility that enhances video playback by increasing the frame rate of any video to 60 frames per second or higher. It achieves this in real-time using advanced frame interpolation algorithms, making video motion appear smoother and more fluid directly within your preferred media player.