A lightweight web browser is a web browser that sacrifices some of the features of a mainstream web browser in order to reduce the consumption of system resources, and especially to minimize the memory footprint. The tables below compare notable lightweight web browsers. Several of them use a common layout engine, but each has a unique combination of features and a potential niche. The minimal user interface in surf, for example, does not have tabs, whereas xombrero can be driven with vi-like keyboard commands.