Unlike Linux user, Windows users have lots of choice when it comes to decide the best web browser for their OS. Linux has Mozilla Firefox as their default web browser. Mozilla Firefox is a user friendly and feature rich web browser. Keeping all the features apart, Firefox is notorious in using CPU memory.
Amaya is a web-editor which is a tool used to create and update documents directly on the web. It is an open source and free authoring tool. They showcase web technologies in a fully-featured web client with the editing and remote access features in a uniform environment. It is covered by the W3C Software Notice and License. It is used today as a test-bed for new web technologies that are not yet supported in major browser. This walks along the original vision of the web as a space for collaboration and not just a one-way publishing medium. You can download this at http://www.w3.org/Amaya/.
Midori is also a light weighted web browser for Linux which stands out because of its speed. It hardly uses any system resources and is integrated with GTK+ 2. This browser as a web kit engine which enables speed access to the web, enabling flexible configurable web search. The official features are straightforward bookmark management, Extension modules can be written in C and Vala, Support HTML5 on You tube. It has an extensible interface and is customizable. Midori will be an ideal pick for the linux users. You can download this at http://midori.en.malavida.com/linux/.