Self hosted project community alternatives

I am looking for a self hosted CodePlex clone to use on an intranet. It should be web-based, preferably open-source but may also be commercial.

The important features I need are:

• Discussion board
• Wiki for project documentation
• Mercurial integration (optional)
• Issue tracker (optional)

Any suggestions?

Some alternatives I found:

• Redmine (open source, can be easily installed through BitNami Installer)
• TRAC (open source)
• JIRA (Commercial)
• GitHub Enterprise (Commercial)

I am currently evaluating Redmine.