The Trillia Group
Science, Math, Publications, Book Publishers - The Trillia Group. Publishes and distributes e-book mathematics texts over the internet.
http://www.trillia.com/
Key Curriculum Press
Science, Math, Publications, Book Publishers - Key Curriculum Press. Mathematics education texts and courseware.
https://www.keypress.com/
Reference Works
Science, Math, Publications, Book Publishers - Marcel Dekker. Mathematics and Statistics.
http://dekker.com/
Hindustan Books Agency
Science, Math, Publications, Book Publishers - Hindustan Books Agency. Texts and Readings in Mathematics series (20 titles).
http://www.hindbook.com/
Optimization Online
Science, Math, Publications, Subject Preprint Archives - Optimization Online. A repository of eprints about optimisation and related topics.
https://www.optimization-online.org/
Shelah's Archive
Science, Math, Publications, Subject Preprint Archives - Shelah's Archive. Papers by Saharon Shelah in logic and related.
https://shelah.logic.at/
Forum Geometricorum
Science, Math, Publications, Journals - Forum Geometricorum. Free access electronic journal.
http://forumgeom.fau.edu/
EMANI Homepage
Science, Math, Publications - EMANI. Electronic Mathematical Archiving Network Initiative: to support the long-term electronic preservation of mathematical publications.
http://emani.org/
Fachinformationszentrum Karlsruhe (FIZ)
Science, Math, Publications - Fachinformationszentrum Karlsruhe (FIZ). Information services for academic and industrial research.
https://www.zblmath.fiz-karlsruhe.de/