diff --git a/weboob/backend.py b/weboob/backend.py
index e503b034..68eea904 100644
--- a/weboob/backend.py
+++ b/weboob/backend.py
@@ -31,21 +31,21 @@ class BackendStorage(object):
 
     def set(self, *args):
         if self.storage:
-            return self.storage.set(self.name, *args)
+            return self.storage.set('backends', self.name, *args)
 
     def get(self, *args, **kwargs):
         if self.storage:
-            return self.storage.get(self.name, *args, **kwargs)
+            return self.storage.get('backends', self.name, *args, **kwargs)
         else:
             return kwargs.get('default', None)
 
     def load(self, default):
         if self.storage:
-            return self.storage.load(self.name, default)
+            return self.storage.load('backends', self.name, default)
 
     def save(self):
         if self.storage:
-            return self.storage.save(self.name)
+            return self.storage.save('backends', self.name)
 
 class BaseBackend(object):
     # Module name.
diff --git a/weboob/tools/application/base.py b/weboob/tools/application/base.py
index 27b0f6d5..8359eb5f 100644
--- a/weboob/tools/application/base.py
+++ b/weboob/tools/application/base.py
@@ -27,12 +27,36 @@ from weboob.tools.config.iconfig import ConfigError
 
 __all__ = ['BaseApplication', 'ConfigError']
 
+class FrontendStorage(object):
+    def __init__(self, name, storage):
+        self.name = name
+        self.storage = storage
+
+    def set(self, *args):
+        if self.storage:
+            return self.storage.set('frontends', self.name, *args)
+
+    def get(self, *args, **kwargs):
+        if self.storage:
+            return self.storage.get('frontends', self.name, *args, **kwargs)
+        else:
+            return kwargs.get('default', None)
+
+    def load(self, default):
+        if self.storage:
+            return self.storage.load('frontends', self.name, default)
+
+    def save(self):
+        if self.storage:
+            return self.storage.save('frontends', self.name)
 
 class BaseApplication(object):
     # Application name
     APPNAME = ''
     # Default configuration
     CONFIG = {}
+    # Default storage
+    STORAGE = {}
     # Configuration directory
     CONFDIR = os.path.join(os.path.expanduser('~'), '.weboob')
     # Synopsis
@@ -79,7 +103,10 @@ class BaseApplication(object):
         elif not path.startswith('/'):
             path = os.path.join(self.CONFDIR, path)
 
-        return klass(path)
+        storage = klass(path)
+        self.storage = FrontendStorage(self.APPNAME, storage)
+        self.storage.load(self.STORAGE)
+        return storage
 
     def load_config(self, path=None, klass=None):
         """
diff --git a/weboob/tools/storage.py b/weboob/tools/storage.py
index a89169d6..feff972e 100644
--- a/weboob/tools/storage.py
+++ b/weboob/tools/storage.py
@@ -19,16 +19,16 @@ from copy import deepcopy
 from logging import error
 
 class IStorage:
-    def load(self, backend, default={}):
+    def load(self, what, name, default={}):
         raise NotImplementedError()
 
-    def save(self, backend):
+    def save(self, what, name):
         raise NotImplementedError()
 
-    def set(self, backend, *args):
+    def set(self, what, name, *args):
         raise NotImplementedError()
 
-    def get(self, backend, *args, **kwargs):
+    def get(self, what, name, *args, **kwargs):
         raise NotImplementedError()
 
 try:
@@ -41,16 +41,21 @@ else:
             self.config = YamlConfig(path)
             self.config.load()
 
-        def load(self, backend, default={}):
-            d = self.config.values.get(backend, {})
-            self.config.values[backend] = deepcopy(default)
-            self.config.values[backend].update(d)
+        def load(self, what, name, default={}):
+            d = {}
+            if not what in self.config.values:
+                self.config.values[what] = {}
+            else:
+                d = self.config.values[what].get(name, {})
 
-        def save(self, backend):
+            self.config.values[what][name] = deepcopy(default)
+            self.config.values[what][name].update(d)
+
+        def save(self, what, name):
             self.config.save()
 
-        def set(self, backend, *args):
-            self.config.set(backend, *args)
+        def set(self, what, name, *args):
+            self.config.set(what, name, *args)
 
-        def get(self, backend, *args, **kwargs):
-            return self.config.get(backend, *args, **kwargs)
+        def get(self, what, name, *args, **kwargs):
+            return self.config.get(what, name, *args, **kwargs)