Long time no programming language links: Haskell for Mac is an interactive programming environment for Haskell on the Mac (as the name suggests). Interesting, as it offers a kind of notebook interface with which you can interactively develop code, try it out directly and visualize the results. Quite interesting for playing around with Haskell, but I don't know if it's worth 25 dollars - especially the sandboxing enforced by Apple can quickly become annoying. And since it requires Yosemite, I won't be able to try it out anyway.