I suggest we add two new sections to the forum:
1. Alternative Implementations (that don't threaten to break consensus rules)
2. Alternative Implementations (that do)
That's pretty redundant.
1. btcd, libbit
2. XT, Classic
How is that redundant?
It might sound a little more neutral to use the phrasing:
1. Alternative Implementations (that propose a change to the consensus rules)
2. Alternative Implementations (that maintain the current consensus)
Sounds good to me.