When you click the Projects tab and click the link for a particular project, a list of project tools is displayed in the left navigation pane. You use these tools to work on project-specific documents, code, and issues, and to communicate with other project members. Project tools include:
While project tools are generally for use by project member, nonmembers have read-only access to these same project resources for any project publicly listed on the site. Non-project members, however, cannot modify files or contribute source code until approved as members with specific project roles.