Comment Depends on what you mean by "keep track" (Score 5, Informative) 119
There is an industry software that gets used a lot called iNews.
There's a reddit thread with comments from people who work at news orgs.
Vox Media (The Verge, SBNation, Curbed, Polygon) built its own CMS called Chorus.
The NYTimes uses WordPress for some of its blogs.
And I assume the Washington Post built their own since, well, Bezos.