- AGAE
- ANECA
- American Mathematical Society
- Approximation Theory Network
- CTAN (TeX, LaTeX)
- European Mathematical Society
- London Mathematical Society
- MathSciNet (American Mathematical Society)
- Real Sociedad Matemática Española
- Sociedad Española de Matemática Aplicada
- WinEdt
- Wolfram Research, Inc.
- Zentralblatt MATH (European Mathematical Society)