PubMed and beyond

They are many alternative interfaces to PubMed offering different search and retrieval methods currently not available within PubMed. This free article PubMed and beyond: a survey of web tools for searching biomedical literature looks at and reviews 28 web tools for searching the biomedical literature and compares them to PubMed and each other and has a website dedicated to tracking existing tools and future advances in the area of biomedical literature search tools. Not only does the article look at these 28 interfaces but it also looks at the recent changes to PubMed that were often influenced by these and other outside interfaces.