diff --git a/docs/opensource-users.md b/docs/opensource-users.md
index 2d9949e4..f1e1806a 100644
--- a/docs/opensource-users.md
+++ b/docs/opensource-users.md
@@ -25,6 +25,9 @@ The core part of the Chakra Javascript engine that powers Microsoft Edge
 ### [ChaiScript](https://github.com/ChaiScript/ChaiScript)
 A, header-only, embedded scripting language designed from the ground up to directly target C++ and take advantage of modern C++ development techniques
 
+### [Clara](https://github.com/philsquared/Clara)
+A, single-header-only, type-safe, command line parser - which also prints formatted usage strings.
+
 ### [Couchbase-lite-core](https://github.com/couchbase/couchbase-lite-core)
 The next-generation core storage and query engine for Couchbase Lite/
 
@@ -52,6 +55,9 @@ A C++ client library for Consul. Consul is a distributed tool for discovering an
 ### [Reactive-Extensions/ RxCpp](https://github.com/Reactive-Extensions/RxCpp)
 A library of algorithms for values-distributed-in-time
 
+### [TextFlowCpp](https://github.com/philsquared/textflowcpp)
+A small, single-header-only, library for wrapping and composing columns of text
+
 ### [Trompeloeil](https://github.com/rollbear/trompeloeil)
 A thread safe header only mocking framework for C++14