diff --git a/readme.md b/readme.md
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--- a/readme.md
+++ b/readme.md
@@ -812,7 +812,8 @@ getNestedPrice({item: {price: 9.99}}) // Some(9.99)
 `Option` is also known as `Maybe`. `Some` is sometimes called `Just`. `None` is sometimes called `Nothing`.
 
 ## Functional Programming Libraries in JavaScript
-
+* [mori](https://github.com/swannodette/mori)
+* [Immutable](https://github.com/facebook/immutable-js/)
 * [Ramda](https://github.com/ramda/ramda)
 * [Folktale](http://folktalejs.org)
 * [monet.js](https://cwmyers.github.io/monet.js/)