diff --git a/app/assets/javascripts/submission_statistics.js b/app/assets/javascripts/submission_statistics.js
new file mode 100644
index 00000000..75fe42cd
--- /dev/null
+++ b/app/assets/javascripts/submission_statistics.js
@@ -0,0 +1,96 @@
+$(function() {
+
+  var ACE_FILES_PATH = '/assets/ace/';
+  var THEME = 'ace/theme/textmate';
+
+  var currentSubmission = 0;
+  var active_file = undefined;
+  var fileTrees = []
+  var editor = undefined;
+  var fileTypeById = {}
+
+  var showActiveFile = function() {
+    var session = editor.getSession();
+    var fileType = fileTypeById[active_file.file_type_id]
+    session.setMode(fileType.editor_mode);
+    session.setTabSize(fileType.indent_size);
+    session.setValue(active_file.content);
+    session.setUseSoftTabs(true);
+    session.setUseWrapMode(true);
+
+    showFileTree(currentSubmission);
+    filetree = $(fileTrees[currentSubmission])
+    filetree.jstree("deselect_all");
+    filetree.jstree().select_node(active_file.file_id);
+  };
+
+  var initializeFileTree = function() {
+    $('.files').each(function(index, element) {
+      fileTree = $(element).jstree($(element).data('entries'));
+      fileTree.on('click', 'li.jstree-leaf', function() {
+        var id = parseInt($(this).attr('id'))
+        _.each(files[currentSubmission], function(file) {
+          if (file.file_id === id) {
+            active_file = file;
+          }
+        });
+        showActiveFile();
+      });
+      fileTrees.push(fileTree);
+    });
+  };
+
+  var showFileTree = function(index) {
+    $('.files').hide();
+    $(fileTrees[index].context).show();
+  }
+
+  if ($.isController('exercises') && $('#timeline').isPresent()) {
+
+    _.each(['modePath', 'themePath', 'workerPath'], function(attribute) {
+      ace.config.set(attribute, ACE_FILES_PATH);
+    });
+
+    var slider = $('#submissions-slider>input');
+    var submissions = $('#data').data('submissions');
+    var files = $('#data').data('files');
+    var filetypes = $('#data').data('file-types');
+
+    editor = ace.edit('current-file');
+    editor.setShowPrintMargin(false);
+    editor.setTheme(THEME);
+    editor.$blockScrolling = Infinity;
+    editor.setReadOnly(true);
+
+    _.each(filetypes, function (filetype) {
+      filetype = JSON.parse(filetype);
+      fileTypeById[filetype.id] = filetype;
+    });
+
+    $('tr[data-id]>.clickable').each(function(index, element) {
+      element = $(element);
+      element.click(function() {
+        slider.val(index);
+        slider.change()
+      });
+    });
+
+    slider.on('change', function(event) {
+      currentSubmission = slider.val();
+      var currentFiles = files[currentSubmission];
+      var fileIndex = 0;
+      _.each(currentFiles, function(file, index) {
+        if (file.name === active_file.name) {
+          fileIndex = index;
+        }
+      })
+      active_file = currentFiles[fileIndex];
+      showActiveFile();
+    });
+
+    active_file = files[0][0]
+    initializeFileTree();
+    showActiveFile();
+  }
+
+});
diff --git a/app/assets/stylesheets/statistics.css.scss b/app/assets/stylesheets/statistics.css.scss
new file mode 100644
index 00000000..d148f782
--- /dev/null
+++ b/app/assets/stylesheets/statistics.css.scss
@@ -0,0 +1,12 @@
+#submissions-slider {
+    margin-top: 25px;
+    margin-bottom: 25px;
+}
+
+#current-file.editor {
+    height: 400px;
+}
+
+.clickable {
+    cursor: pointer;
+}
diff --git a/app/views/exercises/external_users/statistics.html.slim b/app/views/exercises/external_users/statistics.html.slim
index 489a7e21..ca5142cc 100644
--- a/app/views/exercises/external_users/statistics.html.slim
+++ b/app/views/exercises/external_users/statistics.html.slim
@@ -1 +1,48 @@
-h1 = "#{@exercise} for external user #{@external_user}"
\ No newline at end of file
+h1 = "#{@exercise} (external user #{@external_user})"
+- submissions = Submission.where("user_id = ?  AND exercise_id = ?", @external_user.id, @exercise.id)
+- current_submission = submissions.first
+- if current_submission
+  - initial_files = current_submission.files.to_a
+
+  - all_files = []
+  - file_types = Set.new()
+  - submissions.each do |submission|
+    - submission.files.each do |file|
+      - file_types.add(ActiveSupport::JSON.encode(file.file_type))
+    - all_files.push(submission.files)
+
+  .hidden#data data-submissions=ActiveSupport::JSON.encode(submissions) data-files=ActiveSupport::JSON.encode(all_files) data-file-types=ActiveSupport::JSON.encode(file_types)
+
+  #stats-editor.row
+    - index = 0
+    - all_files.each do |files|
+      .files class=(@exercise.hide_file_tree ? 'hidden col-sm-3' : 'col-sm-3') data-index=index data-entries=FileTree.new(files).to_js_tree
+      - index += 1
+    div class=(@exercise.hide_file_tree ? 'col-sm-12' : 'col-sm-9')
+      #current-file.editor
+
+  #submissions-slider
+    input type='range' orient='horizontal' list='datapoints' min=0 max=submissions.length-1 value=0
+    datalist#datapoints
+      - index=0
+      - submissions.each do |submission|
+        option data-submission=submission
+          =index
+        - index += 1
+
+  #timeline
+    .table-responsive
+      table.table
+        thead
+          tr
+            - ['.time', '.cause', '.score'].each do |title|
+              th.header = t(title)
+        tbody
+          - submissions.each do |submission|
+            tr data-id=submission.id
+              td.clickable = submission.created_at.strftime("%F %T")
+              td = submission.cause
+              td = submission.score
+
+- else
+  p = t('.no_data_available')
diff --git a/config/locales/de.yml b/config/locales/de.yml
index bbd0e5de..525b65ae 100644
--- a/config/locales/de.yml
+++ b/config/locales/de.yml
@@ -253,6 +253,12 @@ de:
       external_user: Externe Nutzer
     submit:
       failure: Beim Übermitteln Ihrer Punktzahl ist ein Fehler aufgetreten. Bitte versuchen Sie es später erneut.
+    external_users:
+      statistics:
+        no_data_available: Keine Daten verfügbar.
+        time: Zeit
+        cause: Grund
+        score: Punktzahl
   files:
     roles:
       main_file: Hauptdatei
diff --git a/config/locales/en.yml b/config/locales/en.yml
index fc08792a..47539bf1 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -253,6 +253,12 @@ en:
       external_users: External Users
     submit:
       failure: An error occured while transmitting your score. Please try again later.
+    external_users:
+      statistics:
+        no_data_available: No data available.
+        time: Time
+        cause: Cause
+        score: Score
   files:
     roles:
       main_file: Main File