diff --git a/apps/documents/__init__.py b/apps/documents/__init__.py
index 4ab198fa4f..59ae22b374 100755
--- a/apps/documents/__init__.py
+++ b/apps/documents/__init__.py
@@ -44,6 +44,8 @@ document_edit = {'text':_('edit'), 'view':'document_edit', 'args':'object.id', '
 document_edit_metadata = {'text':_('edit metadata'), 'view':'document_edit_metadata', 'args':'object.id', 'famfam':'page_edit', 'permissions':{'namespace':'documents', 'permissions':[PERMISSION_DOCUMENT_METADATA_EDIT]}}
 document_preview = {'text':_('preview'), 'class':'fancybox', 'view':'document_preview', 'args':'object.id', 'famfam':'magnifier', 'permissions':{'namespace':'documents', 'permissions':[PERMISSION_DOCUMENT_VIEW]}}
 document_download = {'text':_('download'), 'view':'document_download', 'args':'object.id', 'famfam':'page_save', 'permissions':{'namespace':'documents', 'permissions':[PERMISSION_DOCUMENT_DOWNLOAD]}}
+document_find_duplicates = {'text':_('find duplicates'), 'view':'document_find_duplicates', 'args':'object.id', 'famfam':'page_refresh', 'permissions':{'namespace':'documents', 'permissions':[PERMISSION_DOCUMENT_VIEW]}}
+document_find_all_duplicates = {'text':_('find all duplicates'), 'view':'document_find_all_duplicates', 'famfam':'page_refresh', 'permissions':{'namespace':'documents', 'permissions':[PERMISSION_DOCUMENT_VIEW]}}
 
 document_page_transformation_create = {'text':_('create new transformation'), 'view':'document_page_transformation_create', 'args':'object.id', 'famfam':'pencil_add', 'permissions':{'namespace':'documents', 'permissions':[PERMISSION_DOCUMENT_TRANSFORM]}}
 document_page_transformation_edit = {'text':_('edit'), 'view':'document_page_transformation_edit', 'args':'object.id', 'famfam':'pencil_go', 'permissions':{'namespace':'documents', 'permissions':[PERMISSION_DOCUMENT_TRANSFORM]}}
@@ -55,7 +57,7 @@ document_page_go_back = {'text':_('return to document'), 'view':'document_view',
 staging_file_preview = {'text':_('preview'), 'class':'fancybox-noscaling', 'view':'staging_file_preview', 'args':'object.id', 'famfam':'drive_magnify'}
 staging_file_delete = {'text':_('delete'), 'view':'staging_file_delete', 'args':'object.id', 'famfam':'drive_delete'}
 
-register_links(Document, [document_view, document_edit, document_edit_metadata, document_delete, document_download], menu_name='sidebar')
+register_links(Document, [document_view, document_edit, document_edit_metadata, document_delete, document_download, document_find_duplicates], menu_name='sidebar')
 register_links(Document, [document_list, document_create, document_create_multiple, document_create_sibling], menu_name='sidebar')
 
 if ENABLE_SINGLE_DOCUMENT_UPLOAD:
diff --git a/apps/documents/urls.py b/apps/documents/urls.py
index ca503edbb1..6abb2155cc 100755
--- a/apps/documents/urls.py
+++ b/apps/documents/urls.py
@@ -13,6 +13,7 @@ from converter.api import QUALITY_HIGH
 
 urlpatterns = patterns('documents.views',
     url(r'^document/list/$', 'document_list', (), 'document_list'),
+    url(r'^document/list/duplicates/$', 'document_find_all_duplicates', (), 'document_find_all_duplicates'),
     url(r'^document/create/from/local/single/$', 'document_create', {'multiple':False}, 'document_create'),
     url(r'^document/create/from/local/multiple/$', 'document_create', {'multiple':True}, 'document_create_multiple'),
     url(r'^document/type/(?P<document_type_id>\d+)/upload/single/$', 'upload_document_with_type', {'multiple':False}, 'upload_document_with_type'),
@@ -27,6 +28,7 @@ urlpatterns = patterns('documents.views',
     url(r'^document/(?P<document_id>\d+)/display/$', 'get_document_image', {'size':DISPLAY_SIZE,'quality':QUALITY_HIGH}, 'document_display'),
     url(r'^document/(?P<document_id>\d+)/download/$', 'document_download', (), 'document_download'),
     url(r'^document/(?P<document_id>\d+)/create/siblings/$', 'document_create_sibling', {'multiple':True if ENABLE_SINGLE_DOCUMENT_UPLOAD == False else False}, 'document_create_sibling'),
+    url(r'^document/(?P<document_id>\d+)/find_duplicates/$', 'document_find_duplicates', (), 'document_find_duplicates'),
 
     url(r'^staging_file/(?P<staging_file_id>\w+)/preview/$', 'staging_file_preview', (), 'staging_file_preview'),
     url(r'^staging_file/(?P<staging_file_id>\w+)/delete/$', 'staging_file_delete', (), 'staging_file_delete'),
diff --git a/apps/documents/views.py b/apps/documents/views.py
index f112fbb573..d90a7ebd73 100755
--- a/apps/documents/views.py
+++ b/apps/documents/views.py
@@ -691,3 +691,45 @@ def document_page_transformation_delete(request, document_page_transformation_id
                 'document':document_page_transformation.document_page.document},
             'previous':previous,
         })
+
+
+def document_find_duplicates(request, document_id):
+    permissions = [PERMISSION_DOCUMENT_VIEW]
+    try:
+        check_permissions(request.user, 'documents', permissions)
+    except Unauthorized, e:
+        raise Http404(e)
+            
+    document = get_object_or_404(Document, pk=document_id)
+    return _find_duplicate_list(request, [document])    
+
+
+def _find_duplicate_list(request, source_document_list=Document.objects.all(), include_source=False):
+    permissions = [PERMISSION_DOCUMENT_VIEW]
+    try:
+        check_permissions(request.user, 'documents', permissions)
+    except Unauthorized, e:
+        raise Http404(e)
+           
+    duplicated = []
+    for document in source_document_list:
+        results = Document.objects.filter(checksum=document.checksum)
+        if not include_source:
+            results = results.exclude(id=document.id)
+        duplicated.extend(results)
+
+
+    return render_to_response('generic_list.html', {
+        'object_list':duplicated,
+        'title':_(u'duplicated documents'),
+    }, context_instance=RequestContext(request))   
+
+
+def document_find_all_duplicates(request):
+    permissions = [PERMISSION_DOCUMENT_VIEW]
+    try:
+        check_permissions(request.user, 'documents', permissions)
+    except Unauthorized, e:
+        raise Http404(e)
+
+    return _find_duplicate_list(request, include_source=True)
diff --git a/apps/main/__init__.py b/apps/main/__init__.py
index 1b5876f595..28b2dfc6a8 100755
--- a/apps/main/__init__.py
+++ b/apps/main/__init__.py
@@ -4,6 +4,7 @@ from common.api import register_menu
 
 from permissions import role_list
 
+from documents import document_find_all_duplicates
 
 check_settings = {'text':_(u'settings'), 'view':'check_settings', 'famfam':'cog'}
 
@@ -11,9 +12,13 @@ check_settings = {'text':_(u'settings'), 'view':'check_settings', 'famfam':'cog'
 register_menu([
     {'text':_(u'home'), 'view':'home', 'famfam':'house', 'position':0},
 
+    {'text':_(u'tools'), 'view':'document_find_all_duplicates', 'links': [
+        document_find_all_duplicates,
+        ],'famfam':'wrench', 'name':'tools','position':7},
+
     {'text':_(u'setup'), 'view':'check_settings', 'links': [
         check_settings, role_list
-        ],'famfam':'cog', 'name':'setup','position':7},
+        ],'famfam':'cog', 'name':'setup','position':8},
 
-    {'text':_(u'about'), 'view':'about', 'position':8},
+    {'text':_(u'about'), 'view':'about', 'position':9},
 ])