You can give Gitorious and Gitlab a try at Bitnami (http://bitnami.com/stack/gitorious and http://bitnami.com/stack/gitlab) There you can download installers, virtual machines and launch cloud servers for Amazon and Azure. All of these options are free. You can launch a 1-hour demo server as well (if you just want to get a quick feeling for the app). Disclaimer: I am one of the Bitnami developers, but as stated above, the packages are completely free to use.
