This is Perl module Net::Twitter::OAuth.
INSTALLATION
Net::Twitter::OAuth installation is straightforward. If your CPAN shell is set up,
you should just be able to do
    % cpan Net::Twitter::OAuth
Download it, unpack it, then build it as per the usual:
    % perl Makefile.PL
    % make && make test
Then install it:
    % make install
DOCUMENTATION
Net::Twitter::OAuth documentation is available as in POD. So you can do:
    % perldoc Net::Twitter::OAuth
to read the documentation online with your favorite pager.
Tatsuhiko Miyagawa