Top : PubAlert
PubMed Free Literature E-mail Alerting Service
PubAlert is a free literature alerting service provided by Protocol Online. It automatically (weekly by default) searches PubMed® Medline® database, using search terms specified by users and notify users of results by E-mails. As a result, you can see all the articles in your field of interest without performing the Medline® search manually.
Sorry, this service has been discontinued. NCBI PubMed provides a similar service, visit Pubmed Alert
Also visit the Latest Scientific Breakthroughs - Articles in Press from Science, Nature, Cell and the Lancet