* Clozure MCL, excellent Mac integration no need to use Emacs
* LispWorks, good Lisp IDE, free for personal use, no
need to use Emacs
* PLT Racket, good Scheme IDE, no need to use Emacs
* Clojure, Cake make's it a cinch, you can use TextMate
It's not Emacs but it speaks SWANK, so it works with a bunch of Lisps.
In general any *nix based system with bash will always be easier to get lisps setup and running(including OSX). This is due to most lisp developers already using such setups.
In my opinion the key to successful lisp development setup is having an integrated REPL. So whatever you do try for that. It would be easy enough to create a setup on OSX that didn't have this and thus was a difficult setup on an otherwise capable OS.
Are you interested in doing GUI or native development on OSX? If so you'll likely end up using FFI of some sort. This is doable but could be hard without some exposure to C/C++/Objective C.
Also it's common practice in the community to just roll your own instead of modifying something that is only a partial fit. I think all the lisp communities have improved on this but it's still a noticeable difference. This can be frustrating if you are coming from a language where the code is more often than not already in a library or framework somewhere. You just have to find it and call it.
NOTE: Windows users can use msys/msysgit/Console to get a functional bash terminal running on windows.
I've been running Clozure and Aquamacs editor for the past two years and I can only say good things about both.
I don't think it's any better or worse than any other platform, really. Using a package manager like Homebrew, it's easy to get SBCL installed and running. Gambit reportedly has good support for integrating into Objective-C applications on the Scheme side. There's also Nu, which lets you do Cocoa programming in a Lispish language.
maybe we can infer that Lisp (or Arc) works well on it.
The last book I spent reading entirely online was the Harry Potter Deathly Hollows leak. 700 crappy photos of pages ;p (I bought 2 copies of the book too, I don't feel I've done anything wrong).
Written by http://news.ycombinator.com/user?id=Eliezer
If you are reading this Conrad, congrats! The book looks great and seems very well received.
I'm curious, does a "slashdotting" create a noticeable blip in traffic or book sales anymore?
His post announcing the book is at http://news.ycombinator.com/item?id=1836935
I imagine that Rowling would sell her manuscript to US publishers in an auction house before putting her work on sale globally.
Who knows? She probably make a few million dollars on the low side and much more if the US publishers are real crazy about it.
Heck, this lead to a premises of my next novel(for the moment, I am writing a novel on a bunch of subversive robots). An American publisher/pirate decides to get into the mechanical computer business. He purchased an invention from a mother of an inventor and proceed to violate the inventor's patent by selling it to the average UK consumer, and then the world, ushering in the computer revolution.