diff --git a/README.md b/README.md
index 42c7390c..885a3fa3 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@ GUI for D programming language, written in D.
 
 Alpha stage of development.
 
-* Crossplatform (Win32 and Linux are supported in current version)
+* Crossplatform (Win32 and Linux are supported in current version); can use SDL2 as a backend.
 * Mostly inspired by Android UI API (layouts, styles, two phase layout, ...)
 * Supports highly customizable UI themes and styles
 * Supports internationalization
@@ -14,6 +14,7 @@ Alpha stage of development.
 * Actually it's a port (with major refactoring) of GUI library for cross platform OpenGL based implementation of Cool Reader app project from C++.
 * Almost ready for 2D games development
 * Goal: provide set of widgets suitable for building of IDE.
+* Non thread safe
 
 
 
diff --git a/dub.json b/dub.json
index 25496c9b..e9a81729 100644
--- a/dub.json
+++ b/dub.json
@@ -7,6 +7,7 @@
     "targetType": "none",
 
     "versions-windows": ["USE_OPENGL", "Unicode"],
+    "versions-posix": ["USE_OPENGL", "USE_SDL", "Unicode"],
 	
     "subPackages": [
         {
@@ -21,35 +22,6 @@
 			"targetPath": "lib",
 			"targetType": "staticLibrary",
 
-			"sourceFiles-posix": [
-			    "3rdparty/X11/xcb/bigreq.d",
-			    "3rdparty/X11/xcb/composite.d",
-			    "3rdparty/X11/xcb/damage.d",
-			    "3rdparty/X11/xcb/dpms.d",
-			    "3rdparty/X11/xcb/glx.d",
-			    "3rdparty/X11/xcb/randr.d",
-			    "3rdparty/X11/xcb/record.d",
-			    "3rdparty/X11/xcb/render.d",
-			    "3rdparty/X11/xcb/res.d",
-			    "3rdparty/X11/xcb/screensaver.d",
-			    "3rdparty/X11/xcb/shape.d",
-			    "3rdparty/X11/xcb/shm.d",
-			    "3rdparty/X11/xcb/xcb.d",
-			    "3rdparty/X11/xcb/xc_misc.d",
-			    "3rdparty/X11/xcb/xevie.d",
-			    "3rdparty/X11/xcb/xf86dri.d",
-			    "3rdparty/X11/xcb/xfixes.d",
-			    "3rdparty/X11/xcb/xinerama.d",
-			    "3rdparty/X11/xcb/xprint.d",
-			    "3rdparty/X11/xcb/xproto.d",
-			    "3rdparty/X11/xcb/xtest.d",
-			    "3rdparty/X11/xcb/xv.d",
-			    "3rdparty/X11/xcb/xvmc.d",
-			    "3rdparty/X11/xcb/image.d",
-			    "3rdparty/X11/keysymdef.d",
-			    "3rdparty/X11/X.d",
-			    "3rdparty/X11/Xlib.d"
-			],
 			"sourceFiles-windows": [
 				"3rdparty/win32/basetsd.d",
 				"3rdparty/win32/basetyps.d",
@@ -107,6 +79,7 @@
 				"3rdparty/win32/wtypes.d",
 			],
 			"dependencies": {
+				"derelict-sdl2": "~master",
 				"derelict-gl3": "~master",
 				"derelict-fi": "~master",
 				"derelict-ft": "~master"
diff --git a/examples/example1/dub.json b/examples/example1/dub.json
index 0145b497..696e28e6 100644
--- a/examples/example1/dub.json
+++ b/examples/example1/dub.json
@@ -11,36 +11,6 @@
 
     "sourcePaths": ["../../src"],
 
-	"sourceFiles-posix": [
-	    "../../3rdparty/X11/xcb/bigreq.d",
-	    "../../3rdparty/X11/xcb/composite.d",
-	    "../../3rdparty/X11/xcb/damage.d",
-	    "../../3rdparty/X11/xcb/dpms.d",
-	    "../../3rdparty/X11/xcb/glx.d",
-	    "../../3rdparty/X11/xcb/randr.d",
-	    "../../3rdparty/X11/xcb/record.d",
-	    "../../3rdparty/X11/xcb/render.d",
-	    "../../3rdparty/X11/xcb/res.d",
-	    "../../3rdparty/X11/xcb/screensaver.d",
-	    "../../3rdparty/X11/xcb/shape.d",
-	    "../../3rdparty/X11/xcb/shm.d",
-	    "../../3rdparty/X11/xcb/xcb.d",
-	    "../../3rdparty/X11/xcb/xc_misc.d",
-	    "../../3rdparty/X11/xcb/xevie.d",
-	    "../../3rdparty/X11/xcb/xf86dri.d",
-	    "../../3rdparty/X11/xcb/xfixes.d",
-	    "../../3rdparty/X11/xcb/xinerama.d",
-	    "../../3rdparty/X11/xcb/xprint.d",
-	    "../../3rdparty/X11/xcb/xproto.d",
-	    "../../3rdparty/X11/xcb/xtest.d",
-	    "../../3rdparty/X11/xcb/xv.d",
-	    "../../3rdparty/X11/xcb/xvmc.d",
-	    "../../3rdparty/X11/xcb/image.d",
-	    "../../3rdparty/X11/keysymdef.d",
-	    "../../3rdparty/X11/X.d",
-	    "../../3rdparty/X11/Xlib.d"
-	],
-
     "sourceFiles-windows": [
         "../../3rdparty/win32/basetsd.d",
         "../../3rdparty/win32/basetyps.d",
@@ -117,10 +87,12 @@
     "libs-posix": ["xcb", "xcb-util", "xcb-shm", "xcb-image", "xcb-keysyms", "X11-xcb", "X11"],
 
     "versions-windows": ["USE_OPENGL", "Unicode"],
+    "versions-posix": ["USE_OPENGL", "USE_SDL", "Unicode"],
 
 
     "dependencies": {
         "dlangui:dlanguilib": "~master",
+        "derelict-sdl2": "~master",
         "derelict-gl3": "~master",
         "derelict-fi": "~master",
         "derelict-ft": "~master"