diff --git a/iotools/__init__.py b/iotools/__init__.py
index 5b40a42..59613fe 100644
--- a/iotools/__init__.py
+++ b/iotools/__init__.py
@@ -13,4 +13,8 @@
 
 from .misc import Console, SysTrayApp, Config, Serializer, Secrets, Cache, Log, PrintLog, Validate, Script
 from .handler import IOHandler, Argument, RunMode, ArgType
-from .gui import Gui, HtmlGui, ThreePartGui, SystemTrayGui, widget
+
+try:
+    from .gui import Gui, HtmlGui, ThreePartGui, SystemTrayGui, widget
+except ImportError:
+    pass
diff --git a/iotools/gui/__init__.py b/iotools/gui/__init__.py
index ba92f8c..6fd0264 100644
--- a/iotools/gui/__init__.py
+++ b/iotools/gui/__init__.py
@@ -1,5 +1,9 @@
 __all__ = [
     "Gui", "HtmlGui", "ThreePartGui", "SystemTrayGui",
+    "ArgsGui", "ArgFrame",
+    "widget",
 ]
 
 from .gui import Gui, HtmlGui, ThreePartGui, SystemTrayGui
+from .argsgui import ArgsGui, ArgFrame
+from . import widget
diff --git a/iotools/handler/argsgui.py b/iotools/gui/argsgui.py
similarity index 95%
rename from iotools/handler/argsgui.py
rename to iotools/gui/argsgui.py
index 4d18914..f29869e 100644
--- a/iotools/handler/argsgui.py
+++ b/iotools/gui/argsgui.py
@@ -10,13 +10,14 @@
 from pathmagic import File, Dir
 from miscutils import issubclass_safe
 
-from ..gui.gui import ThreePartGui
-from ..gui.widget import WidgetHandler, Button, Label, DropDown, CheckBar, IntEntry, FloatEntry, Text, DateTimeEdit, Table, Calendar, ListTable, DictTable, FileSelect, DirSelect, HorizontalGroupBox
-from ..misc.console import Console
+from .gui import ThreePartGui
+from .widget import WidgetHandler, Button, Label, DropDown, CheckBar, IntEntry, FloatEntry, Text, DateTimeEdit, Table, Calendar, ListTable, DictTable, FileSelect, DirSelect, HorizontalGroupBox
+
+from iotools.misc import Console
 
 if TYPE_CHECKING:
-    from .iohandler import IOHandler, Argument
-    from .synchronizer import Synchronizer
+    from iotools.handler import IOHandler, Argument
+    from iotools.handler.synchronizer import Synchronizer
 
 
 class ArgsGui(ThreePartGui):
diff --git a/iotools/handler/clink.py b/iotools/handler/clink.py
index 73e4d61..fda2724 100644
--- a/iotools/handler/clink.py
+++ b/iotools/handler/clink.py
@@ -3,7 +3,7 @@
 import sys
 
 from pathmagic import PathLike, Dir, File
-from ..misc.config import IoToolsConfig, Config
+from iotools.misc import IoToolsConfig, Config
 
 
 class ClinkConfig(Config):
diff --git a/iotools/handler/iohandler.py b/iotools/handler/iohandler.py
index 148293b..d81aa94 100644
--- a/iotools/handler/iohandler.py
+++ b/iotools/handler/iohandler.py
@@ -2,7 +2,7 @@
 
 import string
 import sys
-from typing import Any, Callable, Dict, List, Union, Optional, Type, Tuple
+from typing import Any, Callable, Dict, List, Union, Optional, Type, Tuple, TYPE_CHECKING
 
 from maybe import Maybe
 from subtypes import Enum, ValueEnum, Dict_
@@ -10,9 +10,12 @@
 
 from .synchronizer import Synchronizer
 
-from iotools.gui import widget
 from iotools.misc import Validate, Condition, Validator, IoToolsConfig as Config
 
+if TYPE_CHECKING:
+    from iotools.gui.widget import WidgetHandler
+
+
 # TODO: implement argument profiles
 # TODO: improve dependent arguments
 # TODO: improve smart runmode logic
@@ -151,7 +154,7 @@ def __init__(self, name: str, argtype: Union[type, Callable] = None, default: An
                  choices: Union[Type[Enum], List[Any]] = None, conditions: Union[Callable, List[Callable], Dict[str, Callable]] = None, magnitude: int = None, info: str = None, aliases: List[str] = None, widget_kwargs: dict = None) -> None:
         self.name, self.default, self.magnitude, self.info, self._value, self.widget_kwargs = name, default, magnitude, info, default, widget_kwargs or {}
 
-        self.widget: Optional[widget.WidgetHandler] = None
+        self.widget: Optional[WidgetHandler] = None
         self._aliases: Optional[List[str]] = None
 
         self.aliases = aliases
diff --git a/iotools/handler/synchronizer.py b/iotools/handler/synchronizer.py
index 04a79a5..ab83584 100644
--- a/iotools/handler/synchronizer.py
+++ b/iotools/handler/synchronizer.py
@@ -4,13 +4,13 @@
 
 from subtypes import Dict_
 
-from .argsgui import ArgsGui, ArgFrame
 from .argparser import ArgParser
-from ..gui.widget import TabPage
-from ..misc.serializer import LostObject
+
+from iotools.misc import LostObject
 
 if TYPE_CHECKING:
     from .iohandler import IOHandler
+    from iotools.gui.widget import TabPage
 
 
 class Synchronizer:
@@ -40,6 +40,7 @@ def run_programatically(self, values: Dict_, handler: IOHandler = None) -> Tuple
         return node.get_namespace_ascending(), node.handler
 
     def run_as_gui(self, values: Dict[str, Any], handler: IOHandler = None) -> Tuple[Dict_, IOHandler]:
+        from iotools.gui import ArgsGui
         return ArgsGui(sync=self, values=values, handler=self.determine_chosen_handler(handler)).start().output
 
     def run_from_commandline(self, args: List[str] = None, values: Dict_ = None, handler: IOHandler = None) -> Tuple[Dict_, IOHandler]:
@@ -62,8 +63,7 @@ def set_active_tabs_from_handler_ascending(self, handler: IOHandler) -> None:
 
     def set_widgets_from_last_config_at_current_node(self) -> None:
         """Load the latest valid arguments profile at the current node and set the widgets accordingly."""
-        current = self.current_node
-        last_config = current.handler._load_latest_input_config()
+        last_config = (current := self.current_node).handler._load_latest_input_config()
 
         if last_config is not None:
             current.set_widgets_from_namespace_ascending(last_config)
@@ -117,11 +117,13 @@ def add_subparsers_recursively(self) -> None:
                 child.add_subparsers_recursively()
 
     def create_widgets_recursively(self) -> None:
+        from iotools.gui import ArgFrame, widget
+
         for arg in self.handler.arguments.values():
             ArgFrame.from_arg(arg).stack()
 
         if self.children:
-            with TabPage(page_names=list(self.children)).stack() as self.page:
+            with widget.TabPage(page_names=list(self.children)).stack() as self.page:
                 for name, child in self.children.items():
                     with self.page[name]:
                         child.create_widgets_recursively()
diff --git a/iotools/misc/__init__.py b/iotools/misc/__init__.py
index 69bee6e..a160c92 100644
--- a/iotools/misc/__init__.py
+++ b/iotools/misc/__init__.py
@@ -1,7 +1,7 @@
 __all__ = [
     "Console", "SysTrayApp",
     "Log", "PrintLog",
-    "Serializer", "Secrets",
+    "Serializer", "Secrets", "LostObject",
     "Cache",
     "Config", "IoToolsConfig",
     "Validate", "Condition", "Validator",
@@ -10,7 +10,7 @@
 
 from .console import Console, SysTrayApp
 from .config import Config, IoToolsConfig
-from .serializer import Serializer, Secrets
+from .serializer import Serializer, Secrets, LostObject
 from .cache import Cache
 from .log import Log, PrintLog
 from .validator import Validate, Condition, Validator