diff --git a/BUCK b/BUCK
index 2868155..7887a62 100644
--- a/BUCK
+++ b/BUCK
@@ -1,4 +1,5 @@
 include_defs('//bucklets/gerrit_plugin.bucklet')
+include_defs('//lib/maven.defs')
 
 gerrit_plugin(
   name = 'analytics',
@@ -6,10 +7,13 @@
   resources = glob(['src/main/resources/**/*']),
   manifest_entries = [
     'Gerrit-PluginName: analytics',
+    'Gerrit-Module: com.googlesource.gerrit.plugins.analytics.Module',
+    'Gerrit-SshModule: com.googlesource.gerrit.plugins.analytics.SshModule',
     'Implementation-Title: Analytics plugin',
     'Implementation-URL: https://gerrit-review.googlesource.com/#/admin/projects/plugins/analytics',
   ],
   deps = [
+    ':gitective-core',
   ],
 )
 
@@ -21,3 +25,10 @@
     ':analytics__plugin',
   ],
 )
+
+maven_jar(
+  name = 'gitective-core',
+  id = 'io.fabric8:gitective-core:0.9.18-1',
+  repository = MAVEN_LOCAL,
+  license = 'Apache2.0',
+)
diff --git a/README.md b/README.md
index 7cf1812..d79db9c 100644
--- a/README.md
+++ b/README.md
@@ -3,4 +3,72 @@
 Extract commit and review data from Gerrit projects and expose aggregated metrics
 over REST and SSH API.
 
+## How to build
+
+Clone the analytics plugin into an existing Gerrit source tree under /plugins/analytics
+and then execute buck build.
+
+Example:
+
+```
+   $ git clone https://gerrit.googlesource.com/gerrit
+   $ git clone https://gerrit.googlesource.com/plugins/analytics gerrit/plugins/analytics
+   $ cd gerrit
+   $ buck build plugins/analytics
+```
+
+## How to install
+
+Copy the analytics.jar generated under /buck-out/gen/plugins/analytics/analytics.jar
+onto Gerrit's /plugins directory.
+
+## How to configure
+
+Nothing to configure, it just works.
+
+## How to use
+
+Adds new REST API and SSH commands to allow the extraction of repository statistics
+from Gerrit repositories and changes.
+
+## API
+
+All the API share the same syntax and behaviour. Differently from the standard Gerrit REST
+API, the JSON collections are returned as individual lines and streamed over the socket
+I/O. The choice is driven by the fact that the typical consumer of these API is a BigData
+batch process, typically external to Gerrit and hosted on a separate computing cluster.
+
+A large volume of data can be potentially generated: splitting the output file into separate
+lines helps the BigData processing in the splitting, shuffling and sorting phase.
+
+### Contributors
+
+Extract a unordered list of project contributors statistics, including the commits data
+relevant for statistics purposes, such as timestamp and merge flag.
+
+*REST*
+
+/projects/{project-name}/analytics~contributors
+
+*SSH*
+
+analytics contributors {project-name}
+
+REST Example:
+
+```
+   $ curl http://gerrit.mycompany.com/project/myproyject/analytics~contributors
+
+   {"name":"John Doe","email":"john.doe@mycompany.com","num_commits":1,"commits":[{"sha1":"6a1f73738071e299f600017d99f7252d41b96b4b","date":"Apr 28, 2011 5:13:14 AM","merge":false}]}
+   {"name":"Matt Smith","email":"matt.smith@mycompany.com","num_commits":1,"commits":[{"sha1":"54527e7e3086758a23e3b069f183db6415aca304","date":"Sep 8, 2015 3:11:23 AM","merge":true}]}
+```
+
+SSH Example:
+
+```
+   $ ssh -p 29418 admin@gerrit.mycompany.com analytics contributors
+
+   {"name":"John Doe","email":"john.doe@mycompany.com","num_commits":1,"commits":[{"sha1":"6a1f73738071e299f600017d99f7252d41b96b4b","date":"Apr 28, 2011 5:13:14 AM","merge":false}]}
+   {"name":"Matt Smith","email":"matt.smith@mycompany.com","num_commits":1,"commits":[{"sha1":"54527e7e3086758a23e3b069f183db6415aca304","date":"Sep 8, 2015 3:11:23 AM","merge":true}]}
+```
 
diff --git a/src/main/java/com/googlesource/gerrit/plugins/analytics/CommitInfo.java b/src/main/java/com/googlesource/gerrit/plugins/analytics/CommitInfo.java
new file mode 100644
index 0000000..807e516
--- /dev/null
+++ b/src/main/java/com/googlesource/gerrit/plugins/analytics/CommitInfo.java
@@ -0,0 +1,30 @@
+// Copyright (C) 2016 The Android Open Source Project
+//
+// 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 com.googlesource.gerrit.plugins.analytics;
+
+import java.util.Date;
+
+public class CommitInfo {
+  public final String sha1;
+  public final Date date;
+  public final boolean merge;
+
+  public CommitInfo(String sha1, Date date, boolean merge) {
+    super();
+    this.sha1 = sha1;
+    this.date = date;
+    this.merge = merge;
+  }
+}
diff --git a/src/main/java/com/googlesource/gerrit/plugins/analytics/ContributorsCommand.java b/src/main/java/com/googlesource/gerrit/plugins/analytics/ContributorsCommand.java
new file mode 100644
index 0000000..0105ea5
--- /dev/null
+++ b/src/main/java/com/googlesource/gerrit/plugins/analytics/ContributorsCommand.java
@@ -0,0 +1,60 @@
+// Copyright (C) 2016 The Android Open Source Project
+//
+// 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 com.googlesource.gerrit.plugins.analytics;
+
+import com.google.gerrit.extensions.restapi.UnprocessableEntityException;
+import com.google.gerrit.server.project.ProjectResource;
+import com.google.gerrit.server.project.ProjectsCollection;
+import com.google.gerrit.sshd.CommandMetaData;
+import com.google.gerrit.sshd.SshCommand;
+import com.google.inject.Inject;
+
+import org.kohsuke.args4j.Argument;
+
+import java.io.IOException;
+
+@CommandMetaData(name = "contributors", description = "Extracts the list of contributors to a project")
+public class ContributorsCommand extends SshCommand {
+  private final ProjectsCollection projects;
+  private final ContributorsResource contributors;
+  private final GsonFormatter gsonFmt;
+
+  @Inject
+  public ContributorsCommand(ProjectsCollection projects,
+      ContributorsResource contributors, GsonFormatter gsonFmt) {
+    this.projects = projects;
+    this.contributors = contributors;
+    this.gsonFmt = gsonFmt;
+  }
+
+  @Argument(usage = "project name", metaVar = "PROJECT", required = true)
+  void setProject(String project) throws IllegalArgumentException {
+    try {
+      this.projectRes = projects.parse(project);
+    } catch (UnprocessableEntityException e) {
+      throw new IllegalArgumentException(e.getLocalizedMessage(), e);
+    } catch (IOException e) {
+      throw new IllegalArgumentException(
+          "I/O Error while trying to access project " + project, e);
+    }
+  }
+
+  private ProjectResource projectRes;
+
+  @Override
+  protected void run() throws UnloggedFailure, Failure, Exception {
+    gsonFmt.format(contributors.getStream(projectRes), stdout);
+  }
+}
diff --git a/src/main/java/com/googlesource/gerrit/plugins/analytics/ContributorsResource.java b/src/main/java/com/googlesource/gerrit/plugins/analytics/ContributorsResource.java
new file mode 100644
index 0000000..d9963de
--- /dev/null
+++ b/src/main/java/com/googlesource/gerrit/plugins/analytics/ContributorsResource.java
@@ -0,0 +1,72 @@
+// Copyright (C) 2013 The Android Open Source Project
+//
+// 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 com.googlesource.gerrit.plugins.analytics;
+
+import com.google.gerrit.extensions.restapi.BinaryResult;
+import com.google.gerrit.extensions.restapi.Response;
+import com.google.gerrit.extensions.restapi.RestReadView;
+import com.google.gerrit.server.git.GitRepositoryManager;
+import com.google.gerrit.server.project.ProjectResource;
+import com.google.inject.Inject;
+
+import org.eclipse.jgit.errors.RepositoryNotFoundException;
+import org.eclipse.jgit.lib.Repository;
+
+import java.io.IOException;
+import java.io.OutputStream;
+import java.io.PrintWriter;
+import java.util.stream.Stream;
+
+class ContributorsResource implements RestReadView<ProjectResource> {
+  private final GitRepositoryManager repoManager;
+  private final UserSummaryExport userSummary;
+  private final GsonFormatter gsonFmt;
+
+  class JsonStreamedResult<T> extends BinaryResult {
+    private final Stream<T> committers;
+
+    public JsonStreamedResult(Stream<T> committers) {
+      this.committers = committers;
+    }
+
+    @Override
+    public void writeTo(OutputStream os) throws IOException {
+      try (PrintWriter sout = new PrintWriter(os)) {
+        gsonFmt.format(committers, sout);
+      }
+    }
+  }
+
+  @Inject
+  public ContributorsResource(GitRepositoryManager repoManager,
+      UserSummaryExport userSummary, GsonFormatter gsonFmt) {
+    this.repoManager = repoManager;
+    this.userSummary = userSummary;
+    this.gsonFmt = gsonFmt;
+  }
+
+  @Override
+  public Response<BinaryResult> apply(ProjectResource projectRes)
+      throws RepositoryNotFoundException, IOException {
+    return Response.ok(new JsonStreamedResult<>(getStream(projectRes)));
+  }
+
+  public Stream<UserActivitySummary> getStream(ProjectResource projectRes)
+      throws RepositoryNotFoundException, IOException {
+    try (Repository repo = repoManager.openRepository(projectRes.getNameKey())) {
+      return userSummary.getCommittersStream(repo);
+    }
+  }
+}
diff --git a/src/main/java/com/googlesource/gerrit/plugins/analytics/GsonFormatter.java b/src/main/java/com/googlesource/gerrit/plugins/analytics/GsonFormatter.java
new file mode 100644
index 0000000..eecd33b
--- /dev/null
+++ b/src/main/java/com/googlesource/gerrit/plugins/analytics/GsonFormatter.java
@@ -0,0 +1,43 @@
+// Copyright (C) 2016 The Android Open Source Project
+//
+// 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 com.googlesource.gerrit.plugins.analytics;
+
+import com.google.gerrit.server.OutputFormat;
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+import com.google.inject.Inject;
+import com.google.inject.Singleton;
+
+import java.io.PrintWriter;
+import java.util.stream.Stream;
+
+@Singleton
+public class GsonFormatter {
+  private GsonBuilder gsonBuilder;
+
+  @Inject
+  public GsonFormatter() {
+    gsonBuilder = OutputFormat.JSON_COMPACT.newGsonBuilder();
+  }
+
+  public <T> void format(Stream<T> values, PrintWriter out) {
+    final Gson gson = gsonBuilder.create();
+
+    values.sequential().forEach((T value) -> {
+      gson.toJson(value, out);
+      out.println();
+    });
+  }
+}
diff --git a/src/main/java/com/googlesource/gerrit/plugins/analytics/Module.java b/src/main/java/com/googlesource/gerrit/plugins/analytics/Module.java
new file mode 100644
index 0000000..3d2f6eb
--- /dev/null
+++ b/src/main/java/com/googlesource/gerrit/plugins/analytics/Module.java
@@ -0,0 +1,34 @@
+// Copyright (C) 2013 The Android Open Source Project
+//
+// 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 com.googlesource.gerrit.plugins.analytics;
+
+import static com.google.gerrit.server.project.ProjectResource.PROJECT_KIND;
+
+import com.google.gerrit.extensions.restapi.RestApiModule;
+import com.google.inject.AbstractModule;
+
+public class Module extends AbstractModule {
+
+  @Override
+  protected void configure() {
+
+    install(new RestApiModule() {
+      @Override
+      protected void configure() {
+        get(PROJECT_KIND, "contributors").to(ContributorsResource.class);
+      }
+    });
+  }
+}
diff --git a/src/main/java/com/googlesource/gerrit/plugins/analytics/SshModule.java b/src/main/java/com/googlesource/gerrit/plugins/analytics/SshModule.java
new file mode 100644
index 0000000..7f015f9
--- /dev/null
+++ b/src/main/java/com/googlesource/gerrit/plugins/analytics/SshModule.java
@@ -0,0 +1,25 @@
+// Copyright (C) 2016 The Android Open Source Project
+//
+// 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 com.googlesource.gerrit.plugins.analytics;
+
+import com.google.gerrit.sshd.PluginCommandModule;
+
+public class SshModule extends PluginCommandModule {
+
+  @Override
+  protected void configureCommands() {
+    command(ContributorsCommand.class);
+  }
+}
diff --git a/src/main/java/com/googlesource/gerrit/plugins/analytics/UserActivitySummary.java b/src/main/java/com/googlesource/gerrit/plugins/analytics/UserActivitySummary.java
new file mode 100644
index 0000000..09621cf
--- /dev/null
+++ b/src/main/java/com/googlesource/gerrit/plugins/analytics/UserActivitySummary.java
@@ -0,0 +1,57 @@
+// Copyright (C) 2016 The Android Open Source Project
+//
+// 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 com.googlesource.gerrit.plugins.analytics;
+
+
+import org.eclipse.jgit.lib.ObjectId;
+// import org.gitective.core.stat.UserCommitActivity;
+import org.gitective.core.stat.UserCommitActivity;
+
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+
+public class UserActivitySummary {
+  public final String name;
+  public final String email;
+  public final int numCommits;
+  public final List<CommitInfo> commits;
+
+
+  public UserActivitySummary(String name, String email, int numCommits,
+      List<CommitInfo> commits) {
+    this.name = name;
+    this.email = email;
+    this.numCommits = numCommits;
+    this.commits = commits;
+  }
+
+  public static UserActivitySummary fromUserActivity(UserCommitActivity uca) {
+    return new UserActivitySummary(uca.getName(), uca.getEmail(),
+        uca.getCount(), getCommits(uca.getIds(), uca.getTimes(),
+            uca.getMerges()));
+  }
+
+  private static List<CommitInfo> getCommits(ObjectId[] ids, long[] times,
+      boolean[] merges) {
+    List<CommitInfo> commits = new ArrayList<>(ids.length);
+
+    for (int i = 0; i < ids.length; i++) {
+      commits.add(new CommitInfo(ids[i].name(), new Date(times[i]), merges[i]));
+    }
+
+    return commits;
+  }
+}
diff --git a/src/main/java/com/googlesource/gerrit/plugins/analytics/UserSummaryExport.java b/src/main/java/com/googlesource/gerrit/plugins/analytics/UserSummaryExport.java
new file mode 100644
index 0000000..953dc3a
--- /dev/null
+++ b/src/main/java/com/googlesource/gerrit/plugins/analytics/UserSummaryExport.java
@@ -0,0 +1,42 @@
+// Copyright (C) 2016 The Android Open Source Project
+//
+// 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 com.googlesource.gerrit.plugins.analytics;
+
+import com.google.inject.Singleton;
+
+import org.eclipse.jgit.lib.Repository;
+import org.gitective.core.CommitFinder;
+import org.gitective.core.stat.AuthorHistogramFilter;
+import org.gitective.core.stat.CommitHistogram;
+import org.gitective.core.stat.CommitHistogramFilter;
+import org.gitective.core.stat.UserCommitActivity;
+
+import java.util.stream.Stream;
+
+@Singleton
+public class UserSummaryExport {
+
+  public Stream<UserActivitySummary> getCommittersStream(Repository repo) {
+    CommitFinder finder = new CommitFinder(repo);
+    CommitHistogramFilter filter = new AuthorHistogramFilter();
+    finder.setFilter(filter).find();
+    CommitHistogram histogram = filter.getHistogram();
+    UserCommitActivity[] authorActivity = histogram.getUserActivity();
+
+    return Stream.of(authorActivity)
+        .parallel()
+        .map(UserActivitySummary::fromUserActivity);
+  }
+}