Comment Friendica and redmatrix (Score 1) 88
I have been happily using Friendica for a family network for a while. While quirky, it works, and has a bunch of stuff for interoperating with other sites including facebook and even using RSS feeds. In terms of privacy, development has moved on to redmatrix. The problem being that going to a truly privacy-oriented framework means interoperability is out.
But really it seems like the protocol and the software need to be separated so that different social networking software can interoperate. There is already some of this in friendica for protocols like identi.ca and others. Nominally redmatrix is still largely just a protocol: Zot, but the user interface is progressing.
Sad that neither of these are on this guy's list. I think the wikipedia page on open social networking services is more informative than this article.