Saudi Pharmaceutical Journal - (2009-present) | King Saud University, Saudi Arabia | Elsevier.
Scanning Microscopy - Several issues that did not appear in print (1997-1999) [PDF] | Scanning Microscopy International.
Science - Research Articles, Reports (1997-...(1 year embargo)) | registration required | American Association for the Advancement of Science - AAAS;
Science and Technology of Advanced Materials ( Sci. Technol. Adv. Mater. ) - (2000-present) [PDF] | IOP Publishing.
SCIENCE CHINA Chemistry (Science in China Series B) - Articles (1996-present) [PDF] | Chinese Academy of Sciences.
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Science of Sintering - (2002-present) | behaviour of powders and similar materials during consolidation processes; thermodynamics, kinetics and mechanism of sintering and related processes | International Institute for the Science of Sintering, Beograd, Serbia.
Science Progress - (2001-2006) | review journal in science, technology and medicine | Science Reviews 2000 Ltd, UK.
Scientia Pharmaceutica - (2006-present) [PDF] | English, German | Austrian Journal of Pharmaceutical Sciences.
Scientific Reports ( Sci. Rep. ) - (2011-present) | online open access journal | all areas of the natural sciences — biology, chemistry, physics and earth sciences | Nature Publishing Group.
Scientific Research and Essays - (2006-present) [PDF] | Academic Journals | research in science, medicine, agriculture and engineering.
Scientific World - (2007-2014) | multidisciplinary annual journal of science and technology | Nepal.
SEIBUTSU BUTSURI KAGAKU - Articles (1951-2011) [PDF] | Japanese Electrophoresis Society.
Sensors - Articles (2001 - present) [PDF] | Molecular Diversity Preservation International (MDPI) .
Shigen-to-Sozai - Articles (1989-2006) [PDF] | Mining and Materials Processing Institute of Japan.
Soft Matter - Issue #1 of each volume (2005-present) [PDF] | free registration required | Royal Society of Chemistry.
Soft Nanoscience Letters ( SNL ) - (2011-present) | nanostructured polymers, nanocomposites, physical gels, microemulsions, surface/interface modification, etc. | Scientific Research Publishing.
Solid State Phenomena - Articles (Free: first page only) (1999-present) [PDF] | Online journal. Proceedings, research papers, e-preprints.
Songklanakarin Journal of Science and Technology - Articles (2002-present) [PDF] | interdisciplinary | Prince of Songkla University, Thailand | Thai, English.
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South African Journal of Chemistry - Articles (2000-present) [PDF].
Spectroscopy - Articles, Columns, News (2002-present) [HTML, PDF] | published by Advanstar Communications, Inc.
Spectroscopy Europe, Spectroscopy Asia - (latest issues) | IM Publications.
SpringerPlus - (2012-present) | a new open access journal in all disciplines of Science | original research, case descriptions, methods, data reports, datasets | Springer.
Structure - Articles (1995-...(1 year moving wall)) [HTML, PDF], Supplementary content (1999-present) | Elsevier | biochemistry, structural biology.
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