diff --git a/mergers/list/__init__.py b/mergers/list/__init__.py
new file mode 100644
index 0000000..51ee818
--- /dev/null
+++ b/mergers/list/__init__.py
@@ -0,0 +1,10 @@
+#
+# -*- coding: utf-8 -*-
+#
+# This file is part of reclass (http://github.com/madduck/reclass)
+#
+# Copyright © 2007–13 martin f. krafft <madduck@madduck.net>
+# Released under the terms of the Artistic Licence 2.0
+#
+from extend import ListExtend
+from set import SetExtend
diff --git a/mergers/list/base.py b/mergers/list/base.py
new file mode 100644
index 0000000..a7bbc17
--- /dev/null
+++ b/mergers/list/base.py
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+#
+# -*- coding: utf-8 -*-
+#
+# This file is part of reclass (http://github.com/madduck/reclass)
+#
+# Copyright © 2007–13 martin f. krafft <madduck@madduck.net>
+# Released under the terms of the Artistic Licence 2.0
+#
+from mergers.base import BaseMerger
+
+class BaseListMerger(BaseMerger):
+
+    def merge(self, first, second):
+        first = [first] if not isinstance(first, list) else first[:]
+        second = [second] if not isinstance(second, list) else second[:]
+        return self._combine(first, second)
diff --git a/mergers/list/extend.py b/mergers/list/extend.py
new file mode 100644
index 0000000..f4acc35
--- /dev/null
+++ b/mergers/list/extend.py
@@ -0,0 +1,18 @@
+#
+# -*- coding: utf-8 -*-
+#
+# This file is part of reclass (http://github.com/madduck/reclass)
+#
+# Copyright © 2007–13 martin f. krafft <madduck@madduck.net>
+# Released under the terms of the Artistic Licence 2.0
+#
+from base import BaseListMerger
+
+class ListExtend(BaseListMerger):
+
+    def _combine(self, first, second):
+        if isinstance(second, list):
+            first.extend(second)
+        else:
+            first.append(second)
+        return first
diff --git a/mergers/list/set.py b/mergers/list/set.py
new file mode 100644
index 0000000..ddb0eb4
--- /dev/null
+++ b/mergers/list/set.py
@@ -0,0 +1,17 @@
+#
+# -*- coding: utf-8 -*-
+#
+# This file is part of reclass (http://github.com/madduck/reclass)
+#
+# Copyright © 2007–13 martin f. krafft <madduck@madduck.net>
+# Released under the terms of the Artistic Licence 2.0
+#
+from extend import BaseListMerger
+
+class SetExtend(BaseListMerger):
+
+    def _combine(self, first, second):
+        for i in second:
+            if i not in first:
+                first.append(i)
+        return first
diff --git a/mergers/list/tests/test_extend.py b/mergers/list/tests/test_extend.py
new file mode 100644
index 0000000..bdc40ca
--- /dev/null
+++ b/mergers/list/tests/test_extend.py
@@ -0,0 +1,66 @@
+#
+# -*- coding: utf-8 -*-
+#
+# This file is part of reclass (http://github.com/madduck/reclass)
+#
+# Copyright © 2007–13 martin f. krafft <madduck@madduck.net>
+# Released under the terms of the Artistic Licence 2.0
+#
+from mergers.list import ListExtend
+
+class TestListExtend:
+
+    def setUp(self):
+        self.merger = ListExtend()
+
+    def _test_merge(self, one, two, target):
+        res = self.merger.merge(one, two)
+        print res, target
+        return res == target
+
+    def test_merge_scalars(self):
+        assert self._test_merge(1, 2, [1,2])
+
+    def test_merge_tuples(self):
+        t1 = (1,2,3)
+        t2 = (6,5,4)
+        target = [t1, t2]
+        assert self._test_merge(t1, t2, target)
+
+    def test_merge_lists(self):
+        l1 = [1,2,3]
+        l2 = [6,5,4]
+        target = l1 + l2
+        assert self._test_merge(l1, l2, target)
+
+    def test_merge_scalar_tuple(self):
+        s = 'one'
+        t = (2,3)
+        target = [s, t]
+        assert self._test_merge(s, t, target)
+
+    def test_merge_scalar_list(self):
+        s = 'foo'
+        l = [1,2,3]
+        target = [s]
+        target.extend(l)
+        assert self._test_merge(s, l, target)
+
+    def test_merge_list_scalar(self):
+        l = [1,2,3]
+        s = 'bar'
+        target = l[:]
+        target.append(s)
+        assert self._test_merge(l, s, target)
+
+    def test_merge_duplicates_scalar(self):
+        s1 = 2
+        s2 = 2
+        target = [2,2]
+        assert self._test_merge(s1, s2, target)
+
+    def test_merge_duplicates_list(self):
+        l1 = [1,2,3]
+        l2 = [3,2,1]
+        target = l1 + l2
+        assert self._test_merge(l1, l2, target)
diff --git a/mergers/list/tests/test_set.py b/mergers/list/tests/test_set.py
new file mode 100644
index 0000000..d3e8183
--- /dev/null
+++ b/mergers/list/tests/test_set.py
@@ -0,0 +1,27 @@
+#
+# -*- coding: utf-8 -*-
+#
+# This file is part of reclass (http://github.com/madduck/reclass)
+#
+# Copyright © 2007–13 martin f. krafft <madduck@madduck.net>
+# Released under the terms of the Artistic Licence 2.0
+#
+from test_extend import TestListExtend
+from mergers.list import SetExtend
+
+class TestSetExtend(TestListExtend):
+
+    def setUp(self):
+        self.merger = SetExtend()
+
+    def test_merge_duplicates_scalar(self):
+        s1 = 2
+        s2 = 2
+        target = [2]
+        assert self._test_merge(s1, s2, target)
+
+    def test_merge_duplicates_list(self):
+        l1 = [1,2,3]
+        l2 = [3,2,1]
+        target = l1
+        assert self._test_merge(l1, l2, target)