Maybe first you will remind me that MacTex, which is popular now.
Anyway: I refer some article and find there are also many other tools.
refer from : https://discussions.apple.com/message/18653515#18653515
There are quite a few “integrated” solutions, combining editor and pdf preview (the very fine TeXShop being one of them) — some of them are quite new (even beta); TeXShop, on the other hand, is very mature:
Texmaker (cross-platform, qt-based; all the others are OS X native):
You can also check the entries, and the comments, on Macupdate:
That said, I use none of them, although I have TeXShop around. (This doesn’t mean the new integrated solutions aren’t any good; I haven’t tried them yet.)
That’s because what’s most important, imho, in a good LaTeX environment is the editor, i.e., how much help is there to get the source written. Accordingly, many people would agree that the best editor available plus a fine synchronised, but stand-alone pdf viewer is superior than a (compromising, or so the musing goes) all-in-one tool.
The, hands-down, best pdf viewer, supporting PDFSync (syncing source and pdf), is Skim; it’s free:
As regards the best editor, there is constant disagreement among OS X users, some would even say “war” — but that just shows how vivid the Mac ecosphere is when it comes to such tools.
Leaving the “classics” aside, Emacs (Aquamacs, http://aquamacs.org/) and Vim (Macvim, http://code.google.com/p/macvim/), dreaded for their learning curve, worshipped for their power, two of the best, modern, clean, yet powerful editors are TextMate and Sublime Text 2:
Many would hold that the combination of either TextMate (2) or Sublime Text 2 together with Skim provides the best LaTeX environment ever.