Write up some lines about some consumers

README.md

@@ -123,6 +123,15 @@ Regarding #2, adding the files to your project's build system, each implementati
 - The file `Makefile` which can be used with GNU Make, BSD Make, and possibly others.
 - The file `Makefile.Microsoft_nmake` which can be used with Visual Studio's nmake.
 
+## Projects integrating PQClean-distributed source code
+
+The following projects consume implementations from PQClean and provide their own wrappers around the implementations.
+Their integration strategies may serve as examples for your own projects.
+
+* [pqcrypto crate][https://github.com/pqrust/pqcrypto]: Rust integration that automatically generates wrappers from PQClean source code.
+* [mupq][https://github.com/mupq/]: Runs the implementations from PQClean as reference implementations to compare with microcontroller-optimized code.
+* [liboqs][https://github.com/open-quantum-safe/liboqs]: Open-Quantum-Safe's `liboqs` integrates implementations from PQClean to wrap in their own API.
+
 ## License
 
 Each subdirectory containing implementations contains a `LICENSE` file stating under what license that specific implementation is released.