Mozilla Firefox 49 is a web browser developed by Mozilla Foundation, available for download in full install version for Windows platforms from legacy sources. This version of Firefox was officially released on 2016-09-20 for public access and a brief summary of important updates and change log pertaining to this edition can be read below.

Firefox 49 released with major changes including removal of Firefox Hello, dropping support for Windows SSE Processors and blocking non-essential flash plugin content.

The developers added many new functionalities in this edition including Featured Reader Mode which allow users to control the text spacing and narrate option to read the page content loud. Now without hardware acceleration users can experience improvements in video performance and ability to play multimedia files at 1.25x speed.