Find list of top starred and forked in github
By searching in github
Top starred: https://github.com/search?q=stars:%3E1&s=stars&type=Repositories
Top forked: https://github.com/search?o=desc&q=stars:>1&s=forks&type=Repositories
By online grabbing tool
Top starred: http://github-rank.com/star
Top forked: http://github-rank.com/fork