Rexa is a digital library covering computer science research and the people who create it. It was developed by the Information Extraction and Synthesis Laboratory at the University of Massachusettes with support from NSF. With just over seven million paper, its collection is about half the size of the CS collections of Citseer and a quarter of Google Scholar’s. Rexa ofers some interesting and valuable features, however, including
- A simple and responsive interface
- Cross-linked pages for papers, authors, topics and NSF grants
- Browsing by citations, authors, topics, co-authors, cited authors, and citing authors
- The ability for users to tag papers
The grants abstracts that are indexed appear to be only from the US National Sceicne Foundation, but this is still a useful service if you want to sample related projects for a research proposal you are developing.