diff --git a/bin/key-mapper-gtk b/bin/key-mapper-gtk
index 7cb3b1b5..1964becb 100755
--- a/bin/key-mapper-gtk
+++ b/bin/key-mapper-gtk
@@ -50,7 +50,7 @@ if __name__ == '__main__':
     log_info()
 
     # import key-mapper stuff after setting the log verbosity
-    from keymapper.gtk.window import Window
+    from keymapper.gui.window import Window
     from keymapper.daemon import Daemon
 
     window = Window()
diff --git a/bin/key-mapper-service b/bin/key-mapper-service
index 206dc72d..05a41851 100755
--- a/bin/key-mapper-service
+++ b/bin/key-mapper-service
@@ -33,7 +33,7 @@ from pydbus import SystemBus
 
 from keymapper.logger import update_verbosity, log_info, \
     add_filehandler, logger
-from keymapper.dev.permissions import can_read_devices
+from keymapper.permissions import can_read_devices
 
 
 if __name__ == '__main__':
diff --git a/keymapper/daemon.py b/keymapper/daemon.py
index 63a2b395..60b7d94a 100644
--- a/keymapper/daemon.py
+++ b/keymapper/daemon.py
@@ -35,7 +35,7 @@ from pydbus import SystemBus
 from gi.repository import GLib
 
 from keymapper.logger import logger
-from keymapper.dev.injector import Injector, UNKNOWN
+from keymapper.injection.injector import Injector, UNKNOWN
 from keymapper.mapping import Mapping
 from keymapper.config import config
 from keymapper.state import system_mapping
diff --git a/keymapper/dev/__init__.py b/keymapper/gui/__init__.py
similarity index 100%
rename from keymapper/dev/__init__.py
rename to keymapper/gui/__init__.py
diff --git a/keymapper/dev/reader.py b/keymapper/gui/reader.py
similarity index 99%
rename from keymapper/dev/reader.py
rename to keymapper/gui/reader.py
index 4317d1aa..e31c1fcb 100644
--- a/keymapper/dev/reader.py
+++ b/keymapper/gui/reader.py
@@ -35,8 +35,7 @@ from keymapper.logger import logger
 from keymapper.key import Key
 from keymapper.state import custom_mapping
 from keymapper.getdevices import get_devices
-from keymapper.dev import utils
-
+from keymapper import utils
 
 CLOSE = 1
 
diff --git a/keymapper/gtk/row.py b/keymapper/gui/row.py
similarity index 99%
rename from keymapper/gtk/row.py
rename to keymapper/gui/row.py
index 81b1d734..be73b162 100644
--- a/keymapper/gtk/row.py
+++ b/keymapper/gui/row.py
@@ -28,7 +28,7 @@ from gi.repository import Gtk, GLib, Gdk
 from keymapper.state import custom_mapping, system_mapping
 from keymapper.logger import logger
 from keymapper.key import Key
-from keymapper.dev.reader import keycode_reader
+from keymapper.gui.reader import keycode_reader
 
 
 CTX_KEYCODE = 2
diff --git a/keymapper/gtk/window.py b/keymapper/gui/window.py
similarity index 98%
rename from keymapper/gtk/window.py
rename to keymapper/gui/window.py
index c556dd98..b52be3ac 100755
--- a/keymapper/gtk/window.py
+++ b/keymapper/gui/window.py
@@ -33,13 +33,13 @@ from keymapper.presets import get_presets, find_newest_preset, \
     delete_preset, rename_preset, get_available_preset_name
 from keymapper.logger import logger
 from keymapper.getdevices import get_devices
-from keymapper.gtk.row import Row, to_string
-from keymapper.dev.reader import keycode_reader
-from keymapper.dev.injector import RUNNING, FAILED, NO_GRAB
+from keymapper.gui.row import Row, to_string
+from keymapper.gui.reader import keycode_reader
+from keymapper.injection.injector import RUNNING, FAILED, NO_GRAB
 from keymapper.daemon import get_dbus_interface
 from keymapper.config import config
-from keymapper.dev.macros import is_this_a_macro, parse
-from keymapper.dev import permissions
+from keymapper.injection.macros import is_this_a_macro, parse
+from keymapper import permissions
 
 
 def gtk_iteration():
diff --git a/keymapper/gtk/__init__.py b/keymapper/injection/__init__.py
similarity index 100%
rename from keymapper/gtk/__init__.py
rename to keymapper/injection/__init__.py
diff --git a/keymapper/dev/event_producer.py b/keymapper/injection/event_producer.py
similarity index 99%
rename from keymapper/dev/event_producer.py
rename to keymapper/injection/event_producer.py
index 8247c49d..25ba53e8 100644
--- a/keymapper/dev/event_producer.py
+++ b/keymapper/injection/event_producer.py
@@ -30,8 +30,7 @@ from evdev.ecodes import EV_REL, REL_X, REL_Y, REL_WHEEL, REL_HWHEEL, \
 
 from keymapper.logger import logger
 from keymapper.config import MOUSE, WHEEL
-from keymapper.dev import utils
-
+from keymapper import utils
 
 # miniscule movements on the joystick should not trigger a mouse wheel event
 WHEEL_THRESHOLD = 0.15
diff --git a/keymapper/dev/injector.py b/keymapper/injection/injector.py
similarity index 98%
rename from keymapper/dev/injector.py
rename to keymapper/injection/injector.py
index 742b906e..69986342 100644
--- a/keymapper/dev/injector.py
+++ b/keymapper/injection/injector.py
@@ -33,10 +33,10 @@ from evdev.ecodes import EV_KEY, EV_REL
 
 from keymapper.logger import logger
 from keymapper.getdevices import get_devices, is_gamepad
-from keymapper.dev.keycode_mapper import KeycodeMapper
-from keymapper.dev import utils
-from keymapper.dev.event_producer import EventProducer
-from keymapper.dev.macros import parse, is_this_a_macro
+from keymapper.injection.keycode_mapper import KeycodeMapper
+from keymapper import utils
+from keymapper.injection.event_producer import EventProducer
+from keymapper.injection.macros import parse, is_this_a_macro
 from keymapper.state import system_mapping
 from keymapper.mapping import DISABLE_CODE
 from keymapper.config import NONE, MOUSE, WHEEL
diff --git a/keymapper/dev/keycode_mapper.py b/keymapper/injection/keycode_mapper.py
similarity index 99%
rename from keymapper/dev/keycode_mapper.py
rename to keymapper/injection/keycode_mapper.py
index cbbdeb52..b077d9e5 100644
--- a/keymapper/dev/keycode_mapper.py
+++ b/keymapper/injection/keycode_mapper.py
@@ -29,8 +29,7 @@ from evdev.ecodes import EV_KEY, EV_ABS
 
 from keymapper.logger import logger
 from keymapper.mapping import DISABLE_CODE
-from keymapper.dev import utils
-
+from keymapper import utils
 
 # this state is shared by all KeycodeMappers of this process
 
diff --git a/keymapper/dev/macros.py b/keymapper/injection/macros.py
similarity index 100%
rename from keymapper/dev/macros.py
rename to keymapper/injection/macros.py
diff --git a/keymapper/injection/readme.md b/keymapper/injection/readme.md
new file mode 100644
index 00000000..cec4892d
--- /dev/null
+++ b/keymapper/injection/readme.md
@@ -0,0 +1,12 @@
+# Injection
+
+This folder contains all classes that are only relevant for the injection
+process. There is one process for each device that is being injected for,
+and one context object that is being passed around everywhere for all to use.
+
+The benefit of the context object over regular parameters is that the same
+parameters don't have to be passed to classes and stored redundantly all
+the time. The context is like the processes global configuration and you
+can use whatever is inside. Just don't modify it. If you access a context
+member in two classes you definitely know that those two are working with
+the same thing without having to rely on scattering your pointers everywhere.
diff --git a/keymapper/dev/permissions.py b/keymapper/permissions.py
similarity index 100%
rename from keymapper/dev/permissions.py
rename to keymapper/permissions.py
diff --git a/keymapper/dev/utils.py b/keymapper/utils.py
similarity index 98%
rename from keymapper/dev/utils.py
rename to keymapper/utils.py
index 7addfb4d..f3152389 100644
--- a/keymapper/dev/utils.py
+++ b/keymapper/utils.py
@@ -19,7 +19,7 @@
 # along with key-mapper.  If not, see <https://www.gnu.org/licenses/>.
 
 
-"""Utility functions for all other modules in keymapper.dev"""
+"""Utility functions."""
 
 
 import math
diff --git a/setup.py b/setup.py
index b2e7c195..a8ec71be 100644
--- a/setup.py
+++ b/setup.py
@@ -55,8 +55,8 @@ setup(
     license='GPL-3.0',
     packages=[
         'keymapper',
-        'keymapper.dev',
-        'keymapper.gtk'
+        'keymapper.gui',
+        'keymapper.injection'
     ],
     data_files=[
         # see development.md#files
diff --git a/tests/test.py b/tests/test.py
index 45df9720..40c83d8e 100644
--- a/tests/test.py
+++ b/tests/test.py
@@ -401,13 +401,13 @@ patch_select()
 patch_events()
 
 from keymapper.logger import update_verbosity
-from keymapper.dev.injector import Injector
+from keymapper.injection.injector import Injector
 from keymapper.config import config
-from keymapper.dev.reader import keycode_reader
+from keymapper.gui.reader import keycode_reader
 from keymapper.getdevices import refresh_devices
 from keymapper.state import system_mapping, custom_mapping
 from keymapper.paths import get_config_path
-from keymapper.dev.keycode_mapper import active_macros, unreleased
+from keymapper.injection.keycode_mapper import active_macros, unreleased
 
 # no need for a high number in tests
 Injector.regrab_timeout = 0.15
diff --git a/tests/testcases/test_daemon.py b/tests/testcases/test_daemon.py
index deda85f5..cd2d60fa 100644
--- a/tests/testcases/test_daemon.py
+++ b/tests/testcases/test_daemon.py
@@ -37,7 +37,7 @@ from keymapper.getdevices import get_devices
 from keymapper.paths import get_preset_path, get_config_path
 from keymapper.key import Key
 from keymapper.mapping import Mapping
-from keymapper.dev.injector import STARTING, RUNNING, STOPPED, UNKNOWN
+from keymapper.injection.injector import STARTING, RUNNING, STOPPED, UNKNOWN
 from keymapper.daemon import Daemon, get_dbus_interface, BUS_NAME, \
     path_to_device_name
 
diff --git a/tests/testcases/test_dev_utils.py b/tests/testcases/test_dev_utils.py
index c7c24ec4..29d6b5c3 100644
--- a/tests/testcases/test_dev_utils.py
+++ b/tests/testcases/test_dev_utils.py
@@ -27,7 +27,7 @@ from evdev.ecodes import EV_KEY, EV_ABS, ABS_HAT0X, KEY_A, \
 
 from keymapper.config import config, BUTTONS
 from keymapper.mapping import Mapping
-from keymapper.dev import utils
+from keymapper import utils
 
 from tests.test import new_event, InputDevice, MAX_ABS
 
@@ -38,10 +38,13 @@ class TestDevUtils(unittest.TestCase):
         self.assertIsNone(utils.get_max_abs(InputDevice('/dev/input/event10')))
 
     def test_will_report_key_up(self):
-        self.assertFalse(utils.will_report_key_up(new_event(EV_REL, REL_WHEEL, 1)))
-        self.assertFalse(utils.will_report_key_up(new_event(EV_REL, REL_HWHEEL, -1)))
+        self.assertFalse(
+            utils.will_report_key_up(new_event(EV_REL, REL_WHEEL, 1)))
+        self.assertFalse(
+            utils.will_report_key_up(new_event(EV_REL, REL_HWHEEL, -1)))
         self.assertTrue(utils.will_report_key_up(new_event(EV_KEY, KEY_A, 1)))
-        self.assertTrue(utils.will_report_key_up(new_event(EV_ABS, ABS_HAT0X, -1)))
+        self.assertTrue(
+            utils.will_report_key_up(new_event(EV_ABS, ABS_HAT0X, -1)))
 
     def test_is_wheel(self):
         self.assertTrue(utils.is_wheel(new_event(EV_REL, REL_WHEEL, 1)))
diff --git a/tests/testcases/test_event_producer.py b/tests/testcases/test_event_producer.py
index 85f84371..a194bcf0 100644
--- a/tests/testcases/test_event_producer.py
+++ b/tests/testcases/test_event_producer.py
@@ -27,7 +27,7 @@ from evdev.ecodes import EV_REL, REL_X, REL_Y, REL_WHEEL, REL_HWHEEL, \
 
 from keymapper.config import config
 from keymapper.mapping import Mapping
-from keymapper.dev.event_producer import EventProducer, MOUSE, WHEEL
+from keymapper.injection.event_producer import EventProducer, MOUSE, WHEEL
 
 from tests.test import InputDevice, UInput, MAX_ABS, clear_write_history, \
     uinput_write_history, quick_cleanup, new_event
diff --git a/tests/testcases/test_injector.py b/tests/testcases/test_injector.py
index 74c14b4b..3aa268af 100644
--- a/tests/testcases/test_injector.py
+++ b/tests/testcases/test_injector.py
@@ -28,15 +28,15 @@ from evdev.ecodes import EV_REL, EV_KEY, EV_ABS, ABS_HAT0X, BTN_LEFT, KEY_A, \
     REL_X, REL_Y, REL_WHEEL, REL_HWHEEL, BTN_A, ABS_X, ABS_Y, \
     ABS_Z, ABS_RZ, ABS_VOLUME
 
-from keymapper.dev.injector import is_numlock_on, set_numlock, \
+from keymapper.injection.injector import is_numlock_on, set_numlock, \
     ensure_numlock, Injector, is_in_capabilities, \
     STARTING, RUNNING, STOPPED, NO_GRAB, UNKNOWN
 from keymapper.state import custom_mapping, system_mapping
 from keymapper.mapping import Mapping, DISABLE_CODE, DISABLE_NAME
 from keymapper.config import config, NONE, MOUSE, WHEEL, BUTTONS
 from keymapper.key import Key
-from keymapper.dev.macros import parse
-from keymapper.dev import utils
+from keymapper.injection.macros import parse
+from keymapper import utils
 from keymapper.getdevices import get_devices, is_gamepad
 
 from tests.test import new_event, pending_events, fixtures, \
diff --git a/tests/testcases/test_integration.py b/tests/testcases/test_integration.py
index 809a7bc8..74713a55 100644
--- a/tests/testcases/test_integration.py
+++ b/tests/testcases/test_integration.py
@@ -40,10 +40,10 @@ from gi.repository import Gtk, Gdk
 from keymapper.state import custom_mapping, system_mapping, XMODMAP_FILENAME
 from keymapper.paths import CONFIG_PATH, get_preset_path, get_config_path
 from keymapper.config import config, WHEEL, MOUSE, BUTTONS
-from keymapper.dev.reader import keycode_reader, FILTER_THRESHOLD
-from keymapper.dev.injector import RUNNING
-from keymapper.gtk.row import to_string, HOLDING, IDLE
-from keymapper.dev import permissions
+from keymapper.gui.reader import keycode_reader, FILTER_THRESHOLD
+from keymapper.injection.injector import RUNNING
+from keymapper.gui.row import to_string, HOLDING, IDLE
+from keymapper import permissions
 from keymapper.key import Key
 
 from tests.test import tmp, pending_events, new_event, spy, cleanup, \
diff --git a/tests/testcases/test_keycode_mapper.py b/tests/testcases/test_keycode_mapper.py
index fc6ac9ae..5fde94ee 100644
--- a/tests/testcases/test_keycode_mapper.py
+++ b/tests/testcases/test_keycode_mapper.py
@@ -26,10 +26,10 @@ import time
 from evdev.ecodes import EV_KEY, EV_ABS, KEY_A, BTN_TL, \
     ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y, ABS_Y
 
-from keymapper.dev.keycode_mapper import active_macros, KeycodeMapper, \
+from keymapper.injection.keycode_mapper import active_macros, KeycodeMapper, \
     unreleased, subsets
 from keymapper.state import system_mapping
-from keymapper.dev.macros import parse
+from keymapper.injection.macros import parse
 from keymapper.config import config, BUTTONS
 from keymapper.mapping import Mapping, DISABLE_CODE
 
diff --git a/tests/testcases/test_macros.py b/tests/testcases/test_macros.py
index d07d456b..74e984c1 100644
--- a/tests/testcases/test_macros.py
+++ b/tests/testcases/test_macros.py
@@ -23,7 +23,7 @@ import time
 import unittest
 import asyncio
 
-from keymapper.dev.macros import parse, _Macro, _extract_params, \
+from keymapper.injection.macros import parse, _Macro, _extract_params, \
     is_this_a_macro, _parse_recurse, handle_plus_syntax
 from keymapper.config import config
 from keymapper.mapping import Mapping
diff --git a/tests/testcases/test_permissions.py b/tests/testcases/test_permissions.py
index c08ee73a..8612756f 100644
--- a/tests/testcases/test_permissions.py
+++ b/tests/testcases/test_permissions.py
@@ -25,7 +25,7 @@ import getpass
 import subprocess
 import unittest
 
-from keymapper.dev.permissions import check_injection_rights, check_group, \
+from keymapper.permissions import check_injection_rights, check_group, \
     can_read_devices
 from keymapper.paths import USER
 from keymapper.daemon import is_service_running
diff --git a/tests/testcases/test_reader.py b/tests/testcases/test_reader.py
index d312b5ec..cb7b55a1 100644
--- a/tests/testcases/test_reader.py
+++ b/tests/testcases/test_reader.py
@@ -27,7 +27,7 @@ from evdev.ecodes import EV_KEY, EV_ABS, ABS_HAT0X, ABS_HAT0Y, KEY_COMMA, \
     BTN_LEFT, BTN_TOOL_DOUBLETAP, ABS_Z, ABS_Y, ABS_MISC, KEY_A, \
     EV_REL, REL_WHEEL, REL_X, ABS_X, ABS_RZ
 
-from keymapper.dev.reader import keycode_reader, will_report_up, \
+from keymapper.gui.reader import keycode_reader, will_report_up, \
     event_unix_time
 from keymapper.state import custom_mapping
 from keymapper.config import BUTTONS, MOUSE