[coldtea]

With the exception of pandoc, I don't recall seeing anything particularly impressive from the Haskell camp.

(Btw, this, actual stuff people use, is how I measure programming languages -- this metric takes into account communities, libraries, practical issues, etc all together, and ties them with practical results. It's my version of "let the market decide").

[cageface]

Darcs used to be the poster child for Haskell but then somebody came along and wrote a much better DVCS in C, of all languages. Draw your own conclusions...

[mempko]

Still use darcs to this day. Darcs is magical AND productive. I use a script to play back my darcs commits into a git repo so i can put my projects on github. I love you darcs, I love you.

[imanaccount247]

A much worse DVCS, but written by a famous person.

[scribu]

I think you're forgetting QuickCheck, which has been ported to many other languages.

[jeremiep]

xmonad also comes to mind.

But you're talking more about products than programming languages. Haskell contributed a LOT to programming theory.

Your every day coding is most likely using things coming directly from Haskell without you knowing it.

[jbeja]

jQuery and Javascript Promises comes to mind, I know they started in C++ put they are practically Monads.

[saosebastiao]

Since when did monads become a synonym for Haskell?

[Retra]

You really need to learn monads to use Haskell, and it's one of the major barriers for newcomers. It's no different from pointers in C.

[coldtea]

Since 2000 tutorials emphasizing them as the gist of Haskell programming...

[rubiquity]

I think you mean one specific kind of a Monad.

[emmanueloga_]

You may want to check out Warp [1]. Another quite popular haskell project you may have heard about is this compiler some people use... is called ghc :) [2]

1: http://aosabook.org/en/posa/warp.html

2: https://github.com/ghc/ghc