When I'm trying to download Word2vec tool from official google code page, but I got the following:
svn checkout http://word2vec.googlecode.com/svn/trunk/
svn: E170013: Unable to connect to a repository at URL 'http://word2vec.googlecode.com/svn/trunk'
svn: E160013: '/svn/trunk' path not found
You can download the original code from here: https://github.com/tmikolov/word2vec, whereas I am not sure if there had been further updates to it since the time this snapshot was taken to github.
Or use a "further maintained" implementation of the algorithm, there are quite a few out there, in multiple languages.