Solutions taken from ftp://tug.ctan.org/pub/tex-archive/info/Free_Math_Font_Survey/survey.html in TUG.
Use either txfonts or mathptmx for Times font support. I
personally prefer txfonts since its mathcal symbols look more
natural to me.
To use: include \usepackage{txfonts} or \usepackage{mathptmx} in
the preamble.
Personally the most comfortable Sans Serif fonts are Palatino or Kerkis. The usage is a bit different:
- Palatino: use any of the following:
pxfonts,mathpazoormathpple. For me pxfonts looks more professional like in textbooks. - Kerkis: need to include
\usepackage{kmath,kerkis}
Optionally kurier or arev can also be used. But I don’t their
appearances.
The sfmath package with no Greek font support. You need to include
additionally the sansmathfonts package to enable Greek fonts, but
again the support for some features like mathcal or mathscr are broken.
For art-type fonts that may appear on cover, I recommend to use the
euler or eulervm. The latter can handle missing fonts as closest
resemblance to ComputerModern.
Thank you so much!
BTW mathpazo and mathpple are so similar.