Is there a left-wing equivalent to David Horowitz' "Discover the Network" site?

Right-wing commentator (to put it kindly) David Horowitz has a website called “Discover the Network” – http://www.discoverthenetwork.com/ – which purports to track the lines of funding and support between various liberal and leftist activists and organizations. Intended, obviously, as a reconnaisance report for right-wing activists (although it also could serve as an educational resource for a newbie progressive who doesn’t know all the players yet).

Makes me wonder – has any liberal activist put up an analogous site, tracking the lines of funding between various right-wing organizations, think tanks, etc.?

Well, there’s http://rightweb.irc-online.org

It’s still growing.

What I think you’re looking for is SourceWatch, a project of the Center for Media and Democracy.

They investigate Democrats as well, though, so they’re not exactly a “left-wing equivalent” of “Discover the Network”, which AFAIK is devoted exclusively to tracking lefties.

Kimstu beat me to it. The Center for Media and Democracy does some really great stuff.