From TDN

Because OpenTNL.org is in German, would it make sense to bring a lot of that information back here as an English language resource? --Michael Russell 08:13, 25 January 2011 (PST)

It looks as though the OpenTNL domain name has been taken from whomever was maintaining it. Thankfully, you can still find stuff for OpenTNL on SourceForge.Frogger 14:32, 10 February 2011 (PST)