diff --git a/README.md b/README.md
index d9ede81..2dac930 100644
--- a/README.md
+++ b/README.md
@@ -343,6 +343,7 @@ There're also some great commercial libraries, like [amchart](http://www.amchart
 * [odometer](https://github.com/HubSpot/odometer) - Smoothly transitions numbers with ease.
 * [accounting.js](https://github.com/josscrowcroft/accounting.js) - A lightweight JavaScript library for number, money and currency formatting - fully localisable, zero dependencies.
 * [money.js](https://github.com/josscrowcroft/money.js) - A tiny (1kb) javascript currency conversion library, for web & nodeJS.
+* [Fraction.js](https://github.com/infusion/Fraction.js) - A rational number library for JavaScript
 
 
 ## Storage