You can get a copy of the source code that runs the Living
Internet site, released under the GNU free software license,
along with a user manual that describes how to use the code
as a template to build your own web site, on the source
code page.
The first page of each chapter's design section
describes how to obtain the software for that technology, collected
below for convenient access:
The Mozilla project
maintains four open-source Internet applications -- Firefox
web browser, Thunderbird email program with integrated newsgroup
reader, Chatzilla IRC client -- and is highly recommended as
a primary source of software for your Internet toolbox.
The simple ping software,
built-in to most operating systems, is one of the most useful
utilities for testing your Internet connection.
Some related tips and information are provided on the downloading
software page.