Where can i find towitoko library?

Where can i find towitoko library?

I tried to install the gem ctapi:
gem install ctapi
Fetching: ctapi-0.2.3.gem (100%)
Temporarily enhancing PATH to include DevKit...
Building native extensions. This could take a while...
ERROR: Error installing ctapi:
ERROR: Failed to build gem native extension.
C:/RailsInstaller/Ruby1.9.3/bin/ruby.exe extconf.rb
Using default library towitoko!
checking for main() in -ltowitoko... no
On the site of the gem it says:
You need to install a driver library, that supports the CTAPI interface
for this extension to link against. The newest version of the towitoko
library, that is required to drive the Towitoko Chipdrive Micro, Extern,
Extern II, Intern, Twin, and the "Kartenzwerg", can be download at this
URL: http://www.geocities.com/cprados
The problem is that the url is not avaible! Does somebody know antoher
place where i can find this libaries?