Silex is a free and open source software that allows to create Flash and Html websites directly in the browser without writing code. Defined as a CMS (Content Management System) it is used to assemble multimedia content and publish it.
Silex is used to assemble multimedia content and publish it online and on the desktop. You are able to produce websites quickly, and directly in the browser. Silex is maintained by Silex Labs, non profit organization based in Paris.
Here is the official website.
Download Silex from the official website and then start with Silex as explained here.
To maximize the portability of your work environment you can use USB stick or external hard drive to host your Silex.
To run Silex on linux, you need a local web server.
If this is all new to you, we recommend you to join the forums in which most installation problems are discussed and solved.