diff --git a/README.md b/README.md
index 3aa6b1a..3999275 100644
--- a/README.md
+++ b/README.md
@@ -498,7 +498,9 @@ There're also some great commercial libraries, like [amchart](https://www.amchar
 * [Fraction.js](https://github.com/infusion/Fraction.js) - A rational number library for JavaScript.
 * [Complex.js](https://github.com/infusion/Complex.js) - A complex number library for JavaScript.
 * [Polynomial.js](https://github.com/infusion/Polynomial.js) - A polynomials library for JavaScript.
-* [Quaternion.js](https://github.com/infusion/Quaternion.js) - A quaternion library for JavaScript
+* [Quaternion.js](https://github.com/infusion/Quaternion.js) - A quaternion library for JavaScript.
+* [eigen-js](https://github.com/BertrandBev/eigen-js) - A powerful linear algebra library.
+* [nlopt-js](https://github.com/BertrandBev/nlopt-js) - A non-linear optimization library.
 
 ## Storage