For LaTeX, we have the Font Catalogue which is a good resource for fonts available through LaTeX.
There doesn't appear to be a similar resource for Xe(La)TeX. So let's say I'm bored of computer modern and I want to try out some new fonts in XeLaTeX. Where can I find out what's available? Ideally I'd like to find what fonts have a math alphabet, at least some common ligatures (ff, ffi etc) and old style figures…
Best Answer
With upcoming TeXLive 2017:
from https://sourceforge.net/projects/stixfonts/?source=typ_redirect
from http://tug.org/lucida
from https://github.com/khaledhosny/euler-otf
from http://www.typoma.com
from Microsoft
and of course
Computer Modern