Facemunge is a Chrome add-on developed by Mighty Data, Inc. It is a free tool categorized under Browsers and specifically Add-ons & Tools. This program aims to assist Facebook users in avoiding having their posts and comments mistakenly flagged by Facebook's algorithms.

The functionality of Facemunge is straightforward - it automatically modifies designated words and phrases in your Facebook submissions to make them less likely to trigger algorithmic flags. Each time you post or comment on Facebook, Facemunge activates to check for any trigger words. If detected, it will "munge" the word, making it still readable to humans but more challenging for Facebook's algorithms to identify.