diff --git a/docs/opensource-users.md b/docs/opensource-users.md
index f830f009..0774867c 100644
--- a/docs/opensource-users.md
+++ b/docs/opensource-users.md
@@ -20,11 +20,20 @@ A, single-header, JSON parsing library that takes advantage of what C++ has to o
 ### [Reactive-Extensions/ RxCpp](https://github.com/Reactive-Extensions/RxCpp)
 A library of algorithms for values-distributed-in-time
 
+## [ChakraCore](https://github.com/Microsoft/ChakraCore/tree/403d19c90bc261fd029c29325b72a283dfce4ed7)
+The core part of the Chakra Javascript engine that powers Microsoft Edge
+
+## [Couchbase-lite-core](https://github.com/couchbase/couchbase-lite-core)
+The next-generation core storage and query engine for Couchbase Lite/
+
 ## Applications & Tools
 
 ### [Standardese](https://github.com/foonathan/standardese)
 Standardese aims to be a nextgen Doxygen
 
+### [MAME](https://github.com/mamedev/mame)
+MAME originally stood for Multiple Arcade Machine Emulator
+
 ---
 
 [Home](Readme.md)