Software for (semi-automated?!) abstract screening for systematic reviews. At present, abstrackr is a free, open-source tool for facilitating the citation screening process. Upload your abstracts, invite reviewers, and get to screening!
We are currently integrating machine learning technologies to semi-automate the screening process. Already, abstrackr will prioritize the screening of those articles most likely relevant to the review at hand. In the near-future, it will screen out irrelevant citations for you, automagically.