Confluence vs Mediawiki

Atlassian has launched the new SaaS service Atlassian OnDemand, which includes its popular tools for managing software development projects: JIRA (issue-tracker), Confluence (wiki), GreenHopper (Agile Project Management), Bonfire (bug reporter), FishEye (code manager), Crucible (code review) and Bamboo (integration). All products in the SaaS version provide the full functionality of the installable counterparts. There are only minimal restrictions on the tool integration and use of the custom plug-ins. You can turn on/off the tools as needed. The service pricing is traditional for Atlassian - "everything for $10 for 10 users." Recall that the company is also selling the 10-user leniences of the same installable products for $10. So you can either buy the product for $10, or rent it for $10/month.