From Brown University. Open and free to all. It's set up to automatically pull in abstracts from NLM using PMIDs. One can also transfer abstracts over from EndNote. Allows for collaborative screening of abstracts.
Covidence is a not-for-profit service dedicated to improving the use of evidence in healthcare decision-making. The service partners are the Alfred Hospital, Monash University, National ICT Australia and the University of London.
From AHRQ, SRDR is a powerful and easy-to-use tool for extraction and management of data for systematic reviews or meta-analyses. It is also an open and searchable archive of systematic reviews and their data.