diff --git a/pom.xml b/pom.xml
index 5fe03e8cd..987c6dcaa 100644
--- a/pom.xml
+++ b/pom.xml
@@ -218,21 +218,6 @@
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-checkstyle-plugin</artifactId>
           <version>2.11</version>
-          <executions>
-            <execution>
-              <id>validate</id>
-              <phase>validate</phase>
-              <configuration>
-                <encoding>UTF-8</encoding>
-                <consoleOutput>true</consoleOutput>
-                <failsOnError>true</failsOnError>
-                <linkXRef>false</linkXRef>
-              </configuration>
-              <goals>
-                <goal>check</goal>
-              </goals>
-            </execution>
-          </executions>
           <configuration>
             <propertyExpansion>config_loc=${basedir}/..</propertyExpansion>
             <configLocation>../checkstyle.xml</configLocation>
diff --git a/teavm-samples/teavm-samples-benchmark/pom.xml b/teavm-samples/teavm-samples-benchmark/pom.xml
index 711bcca06..22c1ddfc9 100644
--- a/teavm-samples/teavm-samples-benchmark/pom.xml
+++ b/teavm-samples/teavm-samples-benchmark/pom.xml
@@ -33,16 +33,19 @@
       <groupId>org.teavm</groupId>
       <artifactId>teavm-classlib</artifactId>
       <version>${project.version}</version>
+      <scope>provided</scope>
     </dependency>
     <dependency>
       <groupId>org.teavm</groupId>
       <artifactId>teavm-jso</artifactId>
       <version>${project.version}</version>
+      <scope>provided</scope>
     </dependency>
     <dependency>
       <groupId>org.teavm</groupId>
       <artifactId>teavm-dom</artifactId>
       <version>${project.version}</version>
+      <scope>provided</scope>
     </dependency>
     <dependency>
       <groupId>org.jbox2d</groupId>
@@ -54,6 +57,13 @@
       <artifactId>jbox2d-library</artifactId>
       <version>2.2.1.1</version>
       <classifier>sources</classifier>
+      <scope>provided</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.apidesign.bck2brwsr</groupId>
+      <artifactId>emul</artifactId>
+      <version>1.0-SNAPSHOT</version>
+      <classifier>rt</classifier>
     </dependency>
     <dependency>
       <groupId>com.google.gwt</groupId>
@@ -77,44 +87,96 @@
         </configuration>
       </plugin>
       <plugin>
-        <groupId>org.teavm</groupId>
-        <artifactId>teavm-maven-plugin</artifactId>
-        <version>${project.version}</version>
+        <artifactId>maven-jar-plugin</artifactId>
+        <version>2.5</version>
         <executions>
-          <execution>
-            <id>web-client</id>
-            <phase>prepare-package</phase>
-            <goals>
-              <goal>build-javascript</goal>
-            </goals>
-            <configuration>
-              <targetDirectory>${project.build.directory}/generated/js/teavm</targetDirectory>
-              <mainClass>org.teavm.samples.benchmark.teavm.BenchmarkStarter</mainClass>
-              <runtime>SEPARATE</runtime>
-              <minifying>false</minifying>
-              <debugInformationGenerated>true</debugInformationGenerated>
-            </configuration>
-          </execution>
+            <execution>
+                <phase>prepare-package</phase>
+                <goals>
+                    <goal>jar</goal>
+                </goals>
+                <configuration>
+                    <archive>
+                        <manifest>
+                            <mainClass>org.teamvm.samples.benchmark.bck2brwsr.BenchmarkStarter</mainClass>
+                            <addClasspath>true</addClasspath>
+                            <classpathPrefix>lib/</classpathPrefix>
+                            <useUniqueVersions>false</useUniqueVersions>
+                        </manifest>
+                    </archive>
+                    <excludes>
+                        <exclude>**/gwt/*</exclude>
+                        <exclude>**/teavm/*</exclude>
+                    </excludes>
+                </configuration>
+            </execution>
         </executions>
       </plugin>
       <plugin>
-        <groupId>org.codehaus.mojo</groupId>
-        <artifactId>gwt-maven-plugin</artifactId>
-        <version>2.7.0</version>
-        <executions>
-          <execution>
-            <goals>
-              <goal>compile</goal>
-            </goals>
-            <configuration>
-             <optimizationLevel>9</optimizationLevel>
-             <compileSourcesArtifacts>
-               <item>org.jbox2d:jbox2d-library</item>
-             </compileSourcesArtifacts>
-            </configuration>
-          </execution>
-        </executions>
+          <groupId>org.teavm</groupId>
+          <artifactId>teavm-maven-plugin</artifactId>
+          <version>${project.version}</version>
+          <executions>
+              <execution>
+                  <id>web-client</id>
+                  <phase>prepare-package</phase>
+                  <goals>
+                      <goal>build-javascript</goal>
+                  </goals>
+                  <configuration>
+                      <targetDirectory>${project.build.directory}/generated/js/teavm</targetDirectory>
+                      <mainClass>org.teavm.samples.benchmark.teavm.BenchmarkStarter</mainClass>
+                      <runtime>SEPARATE</runtime>
+                      <minifying>false</minifying>
+                      <debugInformationGenerated>true</debugInformationGenerated>
+                  </configuration>
+              </execution>
+          </executions>
       </plugin>
+      <plugin>
+          <groupId>org.codehaus.mojo</groupId>
+          <artifactId>gwt-maven-plugin</artifactId>
+          <version>2.7.0</version>
+          <executions>
+              <execution>
+                  <goals>
+                      <goal>compile</goal>
+                  </goals>
+                  <configuration>
+                      <optimizationLevel>9</optimizationLevel>
+                      <compileSourcesArtifacts>
+                          <item>org.jbox2d:jbox2d-library</item>
+                      </compileSourcesArtifacts>
+                  </configuration>
+              </execution>
+          </executions>
+      </plugin>
+        <plugin>
+            <groupId>org.apidesign.bck2brwsr</groupId>
+            <artifactId>bck2brwsr-maven-plugin</artifactId>
+            <version>1.0-SNAPSHOT</version>
+            <executions>
+                <execution>
+                    <phase>prepare-package</phase>
+                    <goals>
+                        <goal>aot</goal>
+                    </goals>
+                </execution>
+            </executions>
+            <configuration>
+                <obfuscation>NONE</obfuscation>
+                <classPathPrefix>lib</classPathPrefix>
+                <mainJavaScript>${project.build.directory}/generated/js/b2b-benchmark.js</mainJavaScript>
+                <vm>${project.build.directory}/generated/js/bck2brwsr.js</vm>
+                <exports>
+                    <export>org.teavm.samples.benchmark.bck2brwsr.BenchmarkStarter</export>
+                    <export>org/jbox2d/collision/shapes/</export>
+                    <export>org/jbox2d/common/</export>
+                    <export>org/jbox2d/dynamics/</export>
+                    <export>org/jbox2d/dynamics/joints/</export>
+                </exports>
+            </configuration>
+        </plugin>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-checkstyle-plugin</artifactId>
diff --git a/teavm-samples/teavm-samples-benchmark/src/main/java/org/teavm/samples/benchmark/bck2brwsr/BenchmarkStarter.java b/teavm-samples/teavm-samples-benchmark/src/main/java/org/teavm/samples/benchmark/bck2brwsr/BenchmarkStarter.java
new file mode 100644
index 000000000..5b6a4e95a
--- /dev/null
+++ b/teavm-samples/teavm-samples-benchmark/src/main/java/org/teavm/samples/benchmark/bck2brwsr/BenchmarkStarter.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2015 Jaroslav Tulach.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.teavm.samples.benchmark.bck2brwsr;
+
+import org.teavm.samples.benchmark.Scene;
+
+public class BenchmarkStarter {
+    private static Scene s = new Scene();
+    
+    public static void main(String... args) {
+        s.calculate();
+        throw new IllegalStateException("Success!");
+    }
+}
diff --git a/teavm-samples/teavm-samples-benchmark/src/main/webapp/bck2brwsr.html b/teavm-samples/teavm-samples-benchmark/src/main/webapp/bck2brwsr.html
new file mode 100644
index 000000000..9d34d8fa4
--- /dev/null
+++ b/teavm-samples/teavm-samples-benchmark/src/main/webapp/bck2brwsr.html
@@ -0,0 +1,46 @@
+<!--
+    Copyright 2014 Alexey Andreev.
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+         http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+-->
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta http-equiv="Content-Type" content="text/html;charset=utf-8">
+    <title>Bck2Brwsr jbox2d benchmark</title>
+  </head>
+  <body onload="main()">
+    <h1>Bck2Brwsr performance</h1>
+    <div>
+      <canvas id="benchmark-canvas" width="600" height="600"></canvas>
+    </div>
+    <table>
+      <thead>
+        <tr>
+          <th>Second</th>
+          <th>Time spent computing, ms</th>
+        </tr>
+      </thead>
+      <tbody id="result-table-body">
+      </tbody>
+    </table>
+    
+        <!-- boot bck2brwsr -->
+        <script type="text/javascript" src="bck2brwsr.js"></script>
+        <script>
+            var vm = bck2brwsr('b2b-benchmark.js');
+            var c = vm.loadClass('org.teavm.samples.benchmark.bck2brwsr.BenchmarkStarter');
+            c.invoke('main');
+        </script>
+    
+</html>
diff --git a/teavm-samples/teavm-samples-benchmark/src/main/webapp/index.html b/teavm-samples/teavm-samples-benchmark/src/main/webapp/index.html
index 6c8f5de14..f5f789deb 100644
--- a/teavm-samples/teavm-samples-benchmark/src/main/webapp/index.html
+++ b/teavm-samples/teavm-samples-benchmark/src/main/webapp/index.html
@@ -17,13 +17,14 @@
 <html>
   <head>
     <meta http-equiv="Content-Type" content="text/html;charset=utf-8">
-    <title>TeaVM vs. GWT performance comparison</title>
+    <title>TeaVM vs. GWT vs. Bck2Brwsr performance comparison</title>
   </head>
   <body onload="main()">
-    <h1>TeaVM vs. GWT performance</h1>
+    <h1>TeaVM vs. GWT vs. Bck2Brwsr performance</h1>
     <ul>
       <li><a href="teavm.html">TeaVM</a></li>
       <li><a href="gwt.html">GWT</a></li>
+      <li><a href="bck2brwsr.html">Bck2Brwsr VM</a></li>
     </ul>
   </body>
 </html>
\ No newline at end of file