Current Contents Indexes and abstracts over 6500 core research journals from all fields. HighWire Press One of the two largest archives of free full-text science materials on the Web. Journal list . Chemical, physical and materials properties, fundamental physical constants, and more. Full-text articles are primarily available in Adobe PDF format.
Coverage varies from title to title.
Many titles in biology and other biosciences, and mathematics. Currently there are over 1000 scientific and technical journals indexed. Citations and abstracts are available at no cost. ScienceDirect offers full-text articles, browsable tables of contents, and article abstracts. Over 8,000 core research journals and selective coverage for thousands more in all subject areas.