| AAAI | Association for the Advancement of Artificial Intelligence | aaai.org |
| AAAS | American Association for the Advancement of Science | aaas.org |
| ACM | Association for Computing Machinery | acm.org |
| AIS | Association for Information Systems | aisnet.org |
| AMS | American Mathematical Society | ams.org |
| APS | Academy of Political Science, Contributing member | psqonline.org |
| ASA | American Statistical Association | amstat.org |
| ASIS&T | American Society for Information Science and Technology | asis.org |
| ASL | Association for Symbolic Logic | aslonline.org |
| ASQ | American Society for Quality | asq.org |
| CPSR | Computer Professionals for Social Responsibility | cpsr.org |
| EACSL | European Association for Computer Science Logic | eacsl.org |
| EAPLS | European Association for Programming Languages and Systems | eapls.org |
| EASST | European Association of Software Science and Technology | easst.org |
| EATCS | European Association for Theoretical Computer Science | eatcs.org |
| EFN | Elektronisk Forpost Norge | efn.no |
| EMS | European Mathematical Society | euro-math-soc.eu |
| IACR | International Association for Cryptologic Research | iacr.org |
| IEEE | Institute of Electrical and Electronics Engineers | ieee.org |
| IMS | Institute of Mathematical Statistics | imstat.org |
| ISOC | Internet Society, Sustaining member | isoc.org |
| MAA | Mathematical Association of America | maa.org |
| MPS | Mathematical Programming Society | mathprog.org |
| NBF | Norsk Bibliotekforening | norskbibliotekforening.no |
| NFF | Norsk Fagbibliotekforening | fagbibliotek.no |
| NMF | Norsk Matematisk Forening | matematikkforeningen.no |
| NSF | Norsk Statistisk Forening | math.uio.no/nsf |
| NUUG | Norwegian Unix Users Group | nuug.no |
| NYAS | New York Academy of Sciences, Patron member | nyas.org |
| PSA | Philosophy of Science Association | philsci.org |
| SEA | Scientists and Engineers for America | sefora.org |
| SIAM | Society for Industrial and Applied Mathematics | siam.org |
| STC | Society for Technical Communication | stc.org |
| USENIX | The Advanced Computing Systems Association | usenix.org |