(Canada) CECM
- Centre for Experimental and Constructive Mathematics preprint service.
- http://oldweb.cecm.sfu.ca/preprints/

(Hungary) Alfréd Rényi Institute, Budapest
- Preprints by author.
- http://www.renyi.hu/konyvtar/preprints.html

(Vietnam) Hanoi Institute of Mathematics
- E-preprints archive for year 1998. Abstracts, text in PostScript.
- http://www.math.ac.vn/library/download/e-print/eprint.htm

(Netherlands) Universiteit van Amsterdam
- Korteweg-de Vries Institute Mathematical Preprint Series. ArXiv overlay.
- http://www.science.uva.nl/math/object.cfm/objectid=D5C1BA92-4840-45A3-938D2C5C6ADF9456

(Australia) Institute for Geometry and its Applications, Adelaide
- Preprint archive with postscript downloads from 1996 - present.
- http://internal.maths.adelaide.edu.au/groups/iga/preprints.html

(Germany) University of Rostock
- Preprints from 1993 to the present.
- http://www.math.uni-rostock.de/math/pub/preprints/index_en.html

(Germany) Humboldt Universität, Berlin
- Mathematics Institutes, Humboldt University, Berlin, Germany.
- http://www.mathematik.hu-berlin.de/publ/publ01.html

(Belgium) University of Louvain
- Searchable preprint archive.
- http://www.math.ucl.ac.be/MAPA/Publications.html

(UK) University of Oxford
- Mathematical Institute. Searchable index.
- http://eprints.maths.ox.ac.uk/

(Turkey) Middle East Technical University
- Department of Mathematics preprint archive.
- http://www.math.metu.edu.tr/academic/preprints.shtml

(USA) Geometry Center, UIUC
- Research papers, conference proceedings, expository and educational articles.
- http://www.geom.uiuc.edu/docs/

(India) Tata Institute of Fundamental Research
- School of Maths preprint server. Indexed by author: DVI/PS.
- http://www.math.tifr.res.in/prep/preprints.html

(Japan) Kyoto University Department of Mathematics
- Searchable preprint collection from 1993.
- http://www.math.kyoto-u.ac.jp/preprint/index_e.html

(Denmark) University of Aarhus
- Department of Mathematical Sciences. Preprints, working papers, lecture notes, memoirs and theses.
- http://www.imf.au.dk/en/research/publications.html

(USA) UIUC
- Department of Mathematics, University of Illinois, Urbana-Champaign, IL. Faculty publications in HTML/PDF.
- http://www.math.uiuc.edu/Publications/

(USA) George Washington University
- Math Department, George Washington University, Washington, DC. 1999 onwards, mainly PDF.
- http://www.gwu.edu/~math/preprints/

(UK) University of Bristol
- Applied Nonlinear Mathematics, Faculty of Engineering.
- http://www.enm.bris.ac.uk/anm/publications.html

(USA) UC Davis
- Math Department, University of California, Davis, CA; ArXiv overlay.
- http://www.math.ucdavis.edu/research/preprints

(USA) Temple University
- Department of Mathematics Research Reports from 1991.
- http://www.math.temple.edu/research/

(USA) RUTCOR
- Research Reports from 1993 in PS or PDF.
- http://rutcor.rutgers.edu/~rrr/

Joint Austrian/Bavarian Publications Broker
- Searchable collections in mathematics and statistics.
- http://www-lit.mathematik.tu-muenchen.de/Harvest/brokers/JABaPub/index.html

(Germany) University of Ulm
- Faculty of Mathematics and Economics, Department of Stochastics. Publications from 1995.
- http://www.mathematik.uni-ulm.de/stochastik/fundl/paper/paperliste.eng.html

(Germany) TU Berlin
- Sfb 288: Differential Geometry and Quantum Physics.
- http://www-sfb288.math.tu-berlin.de/Publications/Preprints.html

(Germany) Muenster
- SFB 478: Geometrische Strukturen in der Mathematik. German/English.
- http://wwwmath.uni-muenster.de/math/inst/sfb/about/publ/index.html

D-MathNet.Preprints
- Searchable index to mathematics preprints in Germany.
- http://www.mathematik.uni-osnabrueck.de/harvest/brokers/MathN/

(Italy) Pisa
- Calculus of variations and geometric measure theory papers from 1995.
- http://cvgmt.sns.it/papers/

(UK) University of Bath
- Mathematics Group preprints by year from 1993.
- http://www.maths.bath.ac.uk/MATHEMATICS/preprints.html

(Germany) Magdeburg University
- Faculty of Mathematics preprints and technical reports by year from 1994, searchable.
- http://www.math.uni-magdeburg.de/preprints/

(Netherlands) CWI Amsterdam
- Technical Reports available by FTP in compressed PostScript, listed by subject and date.
- http://www.cwi.nl/cwi/publications/

(Belgium) Limburgs Universitair Centrum
- Algebra group preprint archive.
- http://alpha.luc.ac.be/Research/Algebra/Publications/Publications.html

(Belgium) Katholieke Universiteit Leuven
- Numerical Analysis, Applied Mathematics and Computer Science Publications.
- http://www.cs.kuleuven.ac.be/cwis/research/natw/publications-E.shtml

(UK) University of Glasgow
- Preprint archive from 1995.
- http://www.maths.gla.ac.uk/research/preprints/

(Germany) Universität Halle-Wittenberg
- Department of Mathematics and Computer Science, Martin-Luther-Universität Halle-Wittenberg.
- http://www.mathematik.uni-halle.de/reports/

(UK) University of Southampton
- Pure Mathematics Group Preprints from 1995.
- http://www.maths.soton.ac.uk/pure/preprints.phtml

(France) Institut Elie Cartan, Nancy
- Preprints. Abstracts; papers in PS format.
- http://altair.iecn.u-nancy.fr/Preprint/publis/

German Mathematics Departments Serving Preprints
- A sensitive map.
- http://www.mathematik.uni-osnabrueck.de/imagemaps/preprints/

(Germany) Albert-Ludwigs-Universität Freiburg
- Mathematics Faculty preprints from 1995.
- http://web.mathematik.uni-freiburg.de/preprints/

(UK) University of Leicester
- Mathematics and computer science technical reports from 1995.
- http://www.mcs.le.ac.uk/research/publications/Publications.html

(USA) Argonne National Laboratory, Math and Computer Science Division
- Technical report anonymous ftp area. Most documents are available in compressed dvi or compressed postscript.
- http://www-fp.mcs.anl.gov/division/publications/

(USA) University of Kentucky
- Department of Mathematics, Lexington, KY.
- http://www.ms.uky.edu/~math/MAreport/

(USA) GANG Document Library
- Center for Geometry, Analysis, Numerics and Graphics. Organised by date, author.
- http://www.gang.umass.edu/preprint/preprint.html

(Germany) KANT Group
- Technical University of Berlin.
- http://www.math.tu-berlin.de/~kant/publications.html

(France) INRIA
- National institute for research in computer science and control. Research reports, technical reports, theses.
- http://www.inria.fr/rrrt/index.en.html

(France) IHES
- L'Institut des Hautes Etudes Scientifiques, Bures-sur-Yvette, France.
- http://www.ihes.fr/IHES-A/Scientific/viescientifiqueA.html#T

(UK) Isaac Newton Institute, Cambridge
- Mathematical Sciences preprints.
- http://www.newton.cam.ac.uk/preprints.html

(Italy) ICTP
- Preprints issued at the Abdus Salam International Centre for Theoretical Physics, Trieste, Italy. Searchable.
- http://www.ictp.trieste.it/~pub_off/

(Germany) Konrad-Zuse Center for Scientific Computation, Berlin
- Preprints and technical reports from 1986, indexed by year.
- http://www.zib.de/bib/pub/pw/

(Germany) FU Berlin
- Math Department, Free University of Berlin, Germany.
- http://www.math.fu-berlin.de/publ/

(USA) DIMACS
- Center for Discrete Mathematics and Theoretical Computer Science, Rutgers, New Jersey.
- http://dimacs.rutgers.edu/TechnicalReports/

(Germany) TU Darmstadt
- Department of Mathematics, Darmstadt University of Technology.
- http://wwwbib.mathematik.tu-darmstadt.de/Math-Net/Preprints/Welcome.html

(USA) Duke University
- Mathematics Department, Duke University, Durham, NC.
- http://www.math.duke.edu/preprints/

(Denmark) MaPhySto, Aarhus
- Center for Mathematical Physics and Stochastics.
- http://www.maphysto.dk/cgi-bin/w3-msql/publications/index.html

(Italy) INFN Rome
- Mathematical Physics, Roma La Sapienza, Rome.
- http://ipparco.roma1.infn.it/

(Denmark) IMADA Odense
- Department of Mathematics and Computer Science, University of Southern Denmark/Odense University.
- http://www.imada.sdu.dk/Research/Preprints/

(USA) American Institute of Mathematics
- Mainly in number theory. From 1998, PS and PDF.
- http://www.aimath.org/preprints.html

(USA) IMS Stony Brook
- Institute for Mathematical Sciences Preprint Server, SUNY Stony Brook, NY. ArXiv mirrored.
- http://www.math.sunysb.edu/preprints/

(Germany) Kiel University
- Mathematics Seminar Reports.
- http://www.numerik.uni-kiel.de/reports/

(Norway) NTNU Trondheim
- Preprint Series, Department of Mathematical Sciences, Norwegian University of Science and Technology, Trondheim.
- http://www.math.ntnu.no/preprint/

(UK) University of Cambridge
- Statistical Laboratory Research Reports.
- http://www.statslab.cam.ac.uk/Reports/

(USA) UCLA
- Math Department, University of California, Los Angeles, CA.
- http://www.math.ucla.edu/showcase/

(Canada) CRM Montreal
- Technical reports of the Centre de Recherches Mathématiques, Montreal, Canada.
- http://crm.umontreal.ca/pub/pub_an.html

(Czech Republic) KMA
- Department of Mathematical Analysis, Charles University.
- http://www.karlin.mff.cuni.cz/kma-preprints/

(Germany) University of Bielefeld
- Diskrete Strukturen in der Mathematik preprints from 1989. Compressed PostScript.
- http://www.mathematik.uni-bielefeld.de/sfb343/

(Russia) St. Petersburg Mathematical Society
- Preprint collection open to members of the Society. TeX and/or PostScript format.
- http://www.mathsoc.spb.ru/preprint/

(USA) IMI South Carolina
- Industrial Mathematics Institute, University of South Carolina, Columbia, SC.
- http://www.math.sc.edu/~imip/

(USA) UC Santa Barbara
- Math Department, University of California, Santa Barbara, CA.
- http://www.math.ucsb.edu/~mgscharl/preprints/UCSBpreprints.htm

(USA) CNA
- Center for Nonlinear Analysis, Carnegie-Mellon University, Pittsburgh, PA.
- http://www.math.cmu.edu/cna/publications.html

(USA) Florida State University
- Math Department, Florida State University, Tallahassee, FL.
- http://www.math.fsu.edu/~aluffi/eprint.archive.html

(USA) Louisiana State University
- Math Department, Baton Rouge, LA.
- http://www.math.lsu.edu/~preprint/

(USA) UT Austin
- Math Department, University of Texas, Austin, TX.
- http://www.ma.utexas.edu/preprints.html

(France) CAMS
- Centre d'Analyse et de Mathématique Sociales, EHESS, Paris, France.
- http://www.ehess.fr/centres/cams/publica/cahiers.html

(USA) IMA
- Institute for Mathematics and its Applications, Minneapolis, MN.
- http://ima.umn.edu/preprints/new.preprintlist.html

(USA) Oklahoma State University
- Math Department, Stillwater, OK; ArXiv overlay.
- http://www.math.okstate.edu/preprint/

(Germany) MPIM Bonn
- Max Planck Institute for Mathematics.
- http://www.mpim-bonn.mpg.de/html/preprints/preprints.html

(Austria) ESI
- Erwin Schrodinger Institute, Vienna, Austria.
- http://www.esi.ac.at/ESI-Preprints.html