diff --git a/README b/README
index 52c8426b5d..fc874b3e15 100644
--- a/README
+++ b/README
@@ -26,6 +26,17 @@ For more documentation please see:
 
 http://www.enlightenment.org/p.php?p=docs
 
+PLATFORMS
+---------
+
+EFL is primarily developerd on Linux (GNU/Linux) and should work on
+most distributions as long as dependencies are provided. It has been
+compiled and run also on Windows (using MINGW32 - please see
+http://www.winbuilds.org ), Mac OS X, FreeBSD and NetBSD. Due to
+serious bugs in OpenBSD, EFL cannot be compiled ro used there. Please
+see:
+
+https://www.mail-archive.com/search?l=misc@openbsd.org&q=subject:%22SIGCHLD+and+libpthread.so%22&o=newest&f=1
 
 
 COMPONENTS