From the webpage:
This Silk is a structured database listing tools and resources that (data) journalists might want to include in their toolkit. We tried to cover the main steps of the ddj process: from data collection and scraping to data cleaning and enhancement; from analysis to data visualization and publishing. We’re trying to showcase especially tools that are free/freemium and open source, but you will find a bit of everything.
This Silk is updated regularly: we have collected a list of hundreds of tools, which we manually tag (are they open source tools? Free? for interactive datavizs?). Make sure you follow this Silk, so you won’t miss an update!
As of 13 October 2015, there are 120 tools listed.
Graphics have a strong showing but not overly so. There are tools for collaboration, web scrapping, writing, etc.
Pitched toward journalists but librarians, researchers, bloggers, etc., will all find tools of interest at this site.