General Mass Spec webpage:

Base Peak, Mass Spec Resource from Wiley: http://www.wiley.com/wileychi/ms/

Database Searching:

EMBL Protein and Peptide Search:  http://www.mann.embl-heidelberg.de/GroupPages/PageLink/peptidesearchpage.html

Mascot Search: http://www.matrixscience.com/cgi/index.pl?page=/search_form_select.html

Pepfrag: http://prowl1.rockefeller.edu/PROWL/pepfrag-java.html

Protein Prospector: http://prospector.ucsf.edu/ (including MS-Tag, MS-Fit, MS-Edman, MS-Seq...)

Major Mass Spectrometer, HPLC, Biosupply company webpage:

Bruker Daltonics: http://www.daltonics.bruker.com/index.htm

JEOL home: http://www.jeol.com/

Varian home: http://www.varianinc.com/index.html

Thermo Finnigan home: http://www.thermo.com/eThermo/CDA/BU_Home/BU_Homepage/0,12482,113,00.html

Micromass home: http://www.micromass.co.uk/

Scientific Instrument Services, Inc. (SIS): http://www.sisweb.com/home.htm

Sigma-Aldrich: http://www.sigma-aldrich.com/saws.nsf/Home?OpenFrameset

OGS-Proteome Technologies: http://www.ogs.com/proteome/home.html

A guide to HPLC: http://kerouac.pharm.uky.edu/ASRG/HPLC/hplcmytry.html

Chiral HPLC application guide: http://www.chromtech.se/chiral.htm

General topic about Chemistry and Biochemistry:

ExPASy Molecular Biology Server: http://www.expasy.ch/

Oligonucleotide Properties Calculator: http://www.biotechlab.nwu.edu/OligoCalc.html

BioChemLink: http://biochemlinks.com/bclinks/bclinks.cfm

Chemfinder: http://www.chemfinder.com/

NIST Chemistry WebBook: http://webbook.nist.gov/chemistry/

Chemistry Journals Online: http://dizzy.library.arizona.edu/library/teams/set/e-journal_pages/chemistry.html

Chemconnect, the world chemical exchange: http://www.chemconnect.com/

Spectroscopic Tools: http://www.chem.uni-potsdam.de/tools/index.html