灰狐协作

#1: Gitlab
http://gitlab.org/

#2: Gitorious
https://gitorious.org/

#3: ChiliProject
https://www.chiliproject.org/

#4: Allura
http://sourceforge.net/projects/allura/

#5: Bitbucket
https://bitbucket.org/

#6: Kiln
http://www.fogcreek.com/kiln/

#7: Codeplane
https://codeplane.com/

全文：http://smashinghub.com/7-free-alternatives-to-github.htm