Added links to related projects.

Author: artob

README.md

@@ -62,3 +62,11 @@ In addition, you _will_ need an OpenXR runtime for your hardware. In the
 absence of suitable vendor-supplied runtimes, have a look at the open-source
 [Monado](https://monado.freedesktop.org) project which supports many common
 devices.
+
+See Also
+--------
+
+- [OpenXR.py](https://github.com/drypy/openxr.py): OpenXR bindings Python.
+
+- [Unofficial OpenXR Tests](https://github.com/artob/openxr-rspec):
+  An unofficial OpenXR conformance test suite.