K-Meleon is described as 'Extremely fast, customizable, lightweight web browser based on the Gecko layout engine developed by Mozilla which lso used by Firefox. K-Meleon is free, open source software released under the GNU General Public License and is designed specifically for' and is a very popular Web Browser in the web browsers category. There are more than 100 alternatives to K-Meleon for a variety of platforms, including Windows, Mac, Linux, Android and iPhone apps. The best K-Meleon alternative is Mozilla Firefox, which is both free and Open Source. Other great apps like K-Meleon are Zen Browser, Brave, Google Chrome and Tor Browser.