diff --git a/Userland/Applications/HexEditor/CMakeLists.txt b/Userland/Applications/HexEditor/CMakeLists.txt
index a758818ba06..154f980adda 100644
--- a/Userland/Applications/HexEditor/CMakeLists.txt
+++ b/Userland/Applications/HexEditor/CMakeLists.txt
@@ -4,24 +4,21 @@ serenity_component(
     TARGETS HexEditor
 )
 
-stringify_gml(HexEditorWindow.gml HexEditorWindowGML.h hex_editor_window_gml)
-stringify_gml(GoToOffsetDialog.gml GoToOffsetDialogGML.h go_to_offset_dialog_gml)
-stringify_gml(FindDialog.gml FindDialogGML.h find_dialog_gml)
+compile_gml(HexEditorWidget.gml HexEditorWidgetGML.cpp)
+compile_gml(GoToOffsetWidget.gml GoToOffsetWidgetGML.cpp)
+compile_gml(FindWidget.gml FindWidgetGML.cpp)
 
 set(SOURCES
     FindDialog.cpp
+    FindWidgetGML.cpp
     GoToOffsetDialog.cpp
+    GoToOffsetWidgetGML.cpp
     HexDocument.cpp
     HexEditor.cpp
+    HexEditorWidgetGML.cpp
     HexEditorWidget.cpp
     main.cpp
 )
 
-set(GENERATED_SOURCES
-    FindDialogGML.h
-    GoToOffsetDialogGML.h
-    HexEditorWindowGML.h
-)
-
 serenity_app(HexEditor ICON app-hex-editor)
 target_link_libraries(HexEditor PRIVATE LibCore LibGfx LibGUI LibConfig LibDesktop LibFileSystemAccessClient LibMain LibTextCodec)
diff --git a/Userland/Applications/HexEditor/FindDialog.cpp b/Userland/Applications/HexEditor/FindDialog.cpp
index 4d20ddfc1ba..f7b3c715470 100644
--- a/Userland/Applications/HexEditor/FindDialog.cpp
+++ b/Userland/Applications/HexEditor/FindDialog.cpp
@@ -8,7 +8,6 @@
 #include <AK/Array.h>
 #include <AK/Hex.h>
 #include <AK/StringView.h>
-#include <Applications/HexEditor/FindDialogGML.h>
 #include <LibGUI/BoxLayout.h>
 #include <LibGUI/Button.h>
 #include <LibGUI/MessageBox.h>
@@ -32,7 +31,13 @@ static constexpr Array<Option, 2> options = {
 
 GUI::Dialog::ExecResult FindDialog::show(GUI::Window* parent_window, String& out_text, ByteBuffer& out_buffer, bool& find_all)
 {
-    auto dialog = FindDialog::construct();
+    auto dialog_or_error = FindDialog::try_create();
+    if (dialog_or_error.is_error()) {
+        GUI::MessageBox::show(parent_window, "Couldn't load find dialog"sv, "Error while opening find dialog"sv, GUI::MessageBox::Type::Error);
+        return ExecResult::Aborted;
+    }
+
+    auto dialog = dialog_or_error.release_value();
 
     if (parent_window)
         dialog->set_icon(parent_window->icon());
@@ -91,7 +96,15 @@ Result<ByteBuffer, String> FindDialog::process_input(String text_value, OptionId
     }
 }
 
-FindDialog::FindDialog()
+ErrorOr<NonnullRefPtr<FindDialog>> FindDialog::try_create()
+{
+    auto find_widget = TRY(HexEditor::FindWidget::try_create());
+    auto find_dialog = TRY(adopt_nonnull_ref_or_enomem(new (nothrow)
+            FindDialog(move(find_widget))));
+    return find_dialog;
+}
+
+FindDialog::FindDialog(NonnullRefPtr<HexEditor::FindWidget> find_widget)
     : Dialog(nullptr)
 {
     resize(280, 146);
@@ -99,15 +112,14 @@ FindDialog::FindDialog()
     set_resizable(false);
     set_title("Find");
 
-    auto main_widget = set_main_widget<GUI::Widget>();
-    main_widget->load_from_gml(find_dialog_gml).release_value_but_fixme_should_propagate_errors();
+    set_main_widget(find_widget);
 
-    m_text_editor = *main_widget->find_descendant_of_type_named<GUI::TextBox>("text_editor");
-    m_find_button = *main_widget->find_descendant_of_type_named<GUI::Button>("find_button");
-    m_find_all_button = *main_widget->find_descendant_of_type_named<GUI::Button>("find_all_button");
-    m_cancel_button = *main_widget->find_descendant_of_type_named<GUI::Button>("cancel_button");
+    m_text_editor = *find_widget->find_descendant_of_type_named<GUI::TextBox>("text_editor");
+    m_find_button = *find_widget->find_descendant_of_type_named<GUI::Button>("find_button");
+    m_find_all_button = *find_widget->find_descendant_of_type_named<GUI::Button>("find_all_button");
+    m_cancel_button = *find_widget->find_descendant_of_type_named<GUI::Button>("cancel_button");
 
-    auto& radio_container = *main_widget->find_descendant_of_type_named<GUI::Widget>("radio_container");
+    auto& radio_container = *find_widget->find_descendant_of_type_named<GUI::Widget>("radio_container");
     for (size_t i = 0; i < options.size(); i++) {
         auto action = options[i];
         auto& radio = radio_container.add<GUI::RadioButton>();
diff --git a/Userland/Applications/HexEditor/FindDialog.h b/Userland/Applications/HexEditor/FindDialog.h
index 40c68184d43..6f7fc12ecab 100644
--- a/Userland/Applications/HexEditor/FindDialog.h
+++ b/Userland/Applications/HexEditor/FindDialog.h
@@ -6,6 +6,7 @@
 
 #pragma once
 
+#include "FindWidget.h"
 #include <AK/Result.h>
 #include <AK/String.h>
 #include <LibGUI/Dialog.h>
@@ -17,10 +18,11 @@ enum OptionId {
 };
 
 class FindDialog : public GUI::Dialog {
-    C_OBJECT(FindDialog);
+    C_OBJECT_ABSTRACT(FindDialog);
 
 public:
     static ExecResult show(GUI::Window* parent_window, String& out_tex, ByteBuffer& out_buffer, bool& find_all);
+    static ErrorOr<NonnullRefPtr<FindDialog>> try_create();
 
 private:
     Result<ByteBuffer, String> process_input(String text_value, OptionId opt);
@@ -29,7 +31,7 @@ private:
     OptionId selected_option() const { return m_selected_option; }
     bool find_all() const { return m_find_all; }
 
-    FindDialog();
+    FindDialog(NonnullRefPtr<HexEditor::FindWidget> find_widget);
     virtual ~FindDialog() override = default;
 
     RefPtr<GUI::TextEditor> m_text_editor;
diff --git a/Userland/Applications/HexEditor/FindDialog.gml b/Userland/Applications/HexEditor/FindWidget.gml
similarity index 97%
rename from Userland/Applications/HexEditor/FindDialog.gml
rename to Userland/Applications/HexEditor/FindWidget.gml
index 728ef5f4f91..11d5ad8a5c1 100644
--- a/Userland/Applications/HexEditor/FindDialog.gml
+++ b/Userland/Applications/HexEditor/FindWidget.gml
@@ -1,4 +1,4 @@
-@GUI::Widget {
+@HexEditor::FindWidget {
     name: "main"
     fixed_width: 280
     fixed_height: 146
diff --git a/Userland/Applications/HexEditor/FindWidget.h b/Userland/Applications/HexEditor/FindWidget.h
new file mode 100644
index 00000000000..d0e83bbc98f
--- /dev/null
+++ b/Userland/Applications/HexEditor/FindWidget.h
@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2023, the SerenityOS developers
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibGUI/Widget.h>
+
+namespace HexEditor {
+
+class FindWidget : public GUI::Widget {
+    C_OBJECT_ABSTRACT(FindWidget)
+public:
+    static ErrorOr<NonnullRefPtr<FindWidget>> try_create();
+    virtual ~FindWidget() override = default;
+
+private:
+    FindWidget() = default;
+};
+
+}
diff --git a/Userland/Applications/HexEditor/GoToOffsetDialog.cpp b/Userland/Applications/HexEditor/GoToOffsetDialog.cpp
index a0d4d067c9a..62d318264d0 100644
--- a/Userland/Applications/HexEditor/GoToOffsetDialog.cpp
+++ b/Userland/Applications/HexEditor/GoToOffsetDialog.cpp
@@ -5,7 +5,6 @@
  */
 
 #include "GoToOffsetDialog.h"
-#include <Applications/HexEditor/GoToOffsetDialogGML.h>
 #include <LibGUI/BoxLayout.h>
 #include <LibGUI/Button.h>
 #include <LibGUI/ComboBox.h>
@@ -18,7 +17,14 @@
 
 GUI::Dialog::ExecResult GoToOffsetDialog::show(GUI::Window* parent_window, int& history_offset, int& out_offset, int selection_offset, int buffer_size)
 {
-    auto dialog = GoToOffsetDialog::construct();
+    auto dialog_or_error = GoToOffsetDialog::try_create();
+    if (dialog_or_error.is_error()) {
+        GUI::MessageBox::show(parent_window, "Couldn't load \"go to offset\" dialog"sv, "Error while opening \"go to offset\" dialog"sv, GUI::MessageBox::Type::Error);
+        return ExecResult::Aborted;
+    }
+
+    auto dialog = dialog_or_error.release_value();
+
     dialog->m_selection_offset = selection_offset;
     dialog->m_buffer_size = buffer_size;
 
@@ -88,7 +94,15 @@ void GoToOffsetDialog::update_statusbar()
     m_statusbar->set_text(1, String::formatted("DEC: {}", new_offset).release_value_but_fixme_should_propagate_errors());
 }
 
-GoToOffsetDialog::GoToOffsetDialog()
+ErrorOr<NonnullRefPtr<GoToOffsetDialog>> GoToOffsetDialog::try_create()
+{
+    auto offset_widget = TRY(HexEditor::GoToOffsetWidget::try_create());
+    auto offset_dialog = TRY(adopt_nonnull_ref_or_enomem(new (nothrow)
+            GoToOffsetDialog(move(offset_widget))));
+    return offset_dialog;
+}
+
+GoToOffsetDialog::GoToOffsetDialog(NonnullRefPtr<HexEditor::GoToOffsetWidget> goto_offset_widget)
     : Dialog(nullptr)
 {
     resize(300, 80);
@@ -96,14 +110,13 @@ GoToOffsetDialog::GoToOffsetDialog()
     set_resizable(false);
     set_title("Go to Offset");
 
-    auto main_widget = set_main_widget<GUI::Widget>();
-    main_widget->load_from_gml(go_to_offset_dialog_gml).release_value_but_fixme_should_propagate_errors();
+    set_main_widget(goto_offset_widget);
 
-    m_text_editor = *main_widget->find_descendant_of_type_named<GUI::TextBox>("text_editor");
-    m_go_button = *main_widget->find_descendant_of_type_named<GUI::Button>("go_button");
-    m_offset_type_box = *main_widget->find_descendant_of_type_named<GUI::ComboBox>("offset_type");
-    m_offset_from_box = *main_widget->find_descendant_of_type_named<GUI::ComboBox>("offset_from");
-    m_statusbar = *main_widget->find_descendant_of_type_named<GUI::Statusbar>("statusbar");
+    m_text_editor = *goto_offset_widget->find_descendant_of_type_named<GUI::TextBox>("text_editor");
+    m_go_button = *goto_offset_widget->find_descendant_of_type_named<GUI::Button>("go_button");
+    m_offset_type_box = *goto_offset_widget->find_descendant_of_type_named<GUI::ComboBox>("offset_type");
+    m_offset_from_box = *goto_offset_widget->find_descendant_of_type_named<GUI::ComboBox>("offset_from");
+    m_statusbar = *goto_offset_widget->find_descendant_of_type_named<GUI::Statusbar>("statusbar");
 
     m_offset_type.append("Decimal"sv);
     m_offset_type.append("Hexadecimal"sv);
diff --git a/Userland/Applications/HexEditor/GoToOffsetDialog.h b/Userland/Applications/HexEditor/GoToOffsetDialog.h
index bdfaaf66c7f..660f10dc289 100644
--- a/Userland/Applications/HexEditor/GoToOffsetDialog.h
+++ b/Userland/Applications/HexEditor/GoToOffsetDialog.h
@@ -6,18 +6,20 @@
 
 #pragma once
 
+#include "GoToOffsetWidget.h"
 #include <AK/Result.h>
 #include <AK/Vector.h>
 #include <LibGUI/Dialog.h>
 
 class GoToOffsetDialog : public GUI::Dialog {
-    C_OBJECT(GoToOffsetDialog);
+    C_OBJECT_ABSTRACT(GoToOffsetDialog);
 
 public:
     static ExecResult show(GUI::Window* parent_window, int& history_offset, int& out_offset, int selection_offset, int end);
+    static ErrorOr<NonnullRefPtr<GoToOffsetDialog>> try_create();
 
 private:
-    GoToOffsetDialog();
+    GoToOffsetDialog(NonnullRefPtr<HexEditor::GoToOffsetWidget> goto_offset_widget);
     virtual ~GoToOffsetDialog() override = default;
     void update_statusbar();
     int process_input();
diff --git a/Userland/Applications/HexEditor/GoToOffsetDialog.gml b/Userland/Applications/HexEditor/GoToOffsetWidget.gml
similarity index 97%
rename from Userland/Applications/HexEditor/GoToOffsetDialog.gml
rename to Userland/Applications/HexEditor/GoToOffsetWidget.gml
index 9504757f940..bc686222b39 100644
--- a/Userland/Applications/HexEditor/GoToOffsetDialog.gml
+++ b/Userland/Applications/HexEditor/GoToOffsetWidget.gml
@@ -1,4 +1,4 @@
-@GUI::Widget {
+@HexEditor::GoToOffsetWidget {
     name: "main"
     fixed_width: 300
     fixed_height: 80
diff --git a/Userland/Applications/HexEditor/GoToOffsetWidget.h b/Userland/Applications/HexEditor/GoToOffsetWidget.h
new file mode 100644
index 00000000000..8bd5752df00
--- /dev/null
+++ b/Userland/Applications/HexEditor/GoToOffsetWidget.h
@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2023, the SerenityOS developers
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibGUI/Widget.h>
+
+namespace HexEditor {
+
+class GoToOffsetWidget : public GUI::Widget {
+    C_OBJECT_ABSTRACT(GoToOffsetWidget)
+public:
+    static ErrorOr<NonnullRefPtr<GoToOffsetWidget>> try_create();
+    virtual ~GoToOffsetWidget() override = default;
+
+private:
+    GoToOffsetWidget() = default;
+};
+
+}
diff --git a/Userland/Applications/HexEditor/HexEditor.cpp b/Userland/Applications/HexEditor/HexEditor.cpp
index 9d427033df6..1ca9a0a788b 100644
--- a/Userland/Applications/HexEditor/HexEditor.cpp
+++ b/Userland/Applications/HexEditor/HexEditor.cpp
@@ -30,6 +30,8 @@
 #include <string.h>
 #include <unistd.h>
 
+namespace HexEditor {
+
 HexEditor::HexEditor()
     : m_document(make<HexDocumentMemory>(ByteBuffer::create_zeroed(0).release_value_but_fixme_should_propagate_errors()))
 {
@@ -287,7 +289,7 @@ void HexEditor::mousedown_event(GUI::MouseEvent& event)
         if (offset >= m_document->size())
             return;
 
-        dbgln_if(HEX_DEBUG, "HexEditor::mousedown_event(hex): offset={}", offset);
+        dbgln_if(HEX_DEBUG, "Editor::mousedown_event(hex): offset={}", offset);
 
         m_edit_mode = EditMode::Hex;
         m_cursor_at_low_nibble = false;
@@ -310,7 +312,7 @@ void HexEditor::mousedown_event(GUI::MouseEvent& event)
         if (offset >= m_document->size())
             return;
 
-        dbgln_if(HEX_DEBUG, "HexEditor::mousedown_event(text): offset={}", offset);
+        dbgln_if(HEX_DEBUG, "Editor::mousedown_event(text): offset={}", offset);
 
         m_position = offset;
         m_cursor_at_low_nibble = false;
@@ -416,7 +418,7 @@ void HexEditor::scroll_position_into_view(size_t position)
 
 void HexEditor::keydown_event(GUI::KeyEvent& event)
 {
-    dbgln_if(HEX_DEBUG, "HexEditor::keydown_event key={}", static_cast<u8>(event.key()));
+    dbgln_if(HEX_DEBUG, "Editor::keydown_event key={}", static_cast<u8>(event.key()));
 
     auto move_and_update_cursor_by = [&](i64 cursor_location_change) {
         size_t new_position = m_position + cursor_location_change;
@@ -914,3 +916,5 @@ GUI::UndoStack& HexEditor::undo_stack()
 {
     return m_undo_stack;
 }
+
+}
diff --git a/Userland/Applications/HexEditor/HexEditor.h b/Userland/Applications/HexEditor/HexEditor.h
index a2397495bcc..af8af9df345 100644
--- a/Userland/Applications/HexEditor/HexEditor.h
+++ b/Userland/Applications/HexEditor/HexEditor.h
@@ -21,6 +21,8 @@
 #include <LibGfx/Font/Font.h>
 #include <LibGfx/TextAlignment.h>
 
+namespace HexEditor {
+
 class HexEditor : public GUI::AbstractScrollableWidget {
     C_OBJECT(HexEditor)
 public:
@@ -111,3 +113,5 @@ private:
 
     void reset_cursor_blink_state();
 };
+
+}
diff --git a/Userland/Applications/HexEditor/HexEditorWidget.cpp b/Userland/Applications/HexEditor/HexEditorWidget.cpp
index aaf35ec8fd7..d91fec4fceb 100644
--- a/Userland/Applications/HexEditor/HexEditorWidget.cpp
+++ b/Userland/Applications/HexEditor/HexEditorWidget.cpp
@@ -15,7 +15,6 @@
 #include <AK/Forward.h>
 #include <AK/Optional.h>
 #include <AK/StringBuilder.h>
-#include <Applications/HexEditor/HexEditorWindowGML.h>
 #include <LibConfig/Client.h>
 #include <LibDesktop/Launcher.h>
 #include <LibFileSystemAccessClient/Client.h>
@@ -36,15 +35,20 @@
 #include <LibTextCodec/Decoder.h>
 #include <string.h>
 
-REGISTER_WIDGET(HexEditor, HexEditor);
+namespace HexEditor {
 
-HexEditorWidget::HexEditorWidget()
+ErrorOr<NonnullRefPtr<HexEditorWidget>> HexEditorWidget::create()
 {
-    load_from_gml(hex_editor_window_gml).release_value_but_fixme_should_propagate_errors();
+    auto widget = TRY(try_create());
+    TRY(widget->setup());
+    return widget;
+}
 
+ErrorOr<void> HexEditorWidget::setup()
+{
     m_toolbar = *find_descendant_of_type_named<GUI::Toolbar>("toolbar");
     m_toolbar_container = *find_descendant_of_type_named<GUI::ToolbarContainer>("toolbar_container");
-    m_editor = *find_descendant_of_type_named<HexEditor>("editor");
+    m_editor = *find_descendant_of_type_named<::HexEditor::HexEditor>("editor");
     m_statusbar = *find_descendant_of_type_named<GUI::Statusbar>("statusbar");
     m_search_results = *find_descendant_of_type_named<GUI::TableView>("search_results");
     m_search_results_container = *find_descendant_of_type_named<GUI::Widget>("search_results_container");
@@ -60,9 +64,9 @@ HexEditorWidget::HexEditorWidget()
         m_editor->update();
     };
 
-    m_editor->on_status_change = [this](int position, HexEditor::EditMode edit_mode, int selection_start, int selection_end) {
+    m_editor->on_status_change = [this](int position, HexEditor::HexEditor::EditMode edit_mode, int selection_start, int selection_end) {
         m_statusbar->set_text(0, String::formatted("Offset: {:#08X}", position).release_value_but_fixme_should_propagate_errors());
-        m_statusbar->set_text(1, String::formatted("Edit Mode: {}", edit_mode == HexEditor::EditMode::Hex ? "Hex" : "Text").release_value_but_fixme_should_propagate_errors());
+        m_statusbar->set_text(1, String::formatted("Edit Mode: {}", edit_mode == HexEditor::HexEditor::EditMode::Hex ? "Hex" : "Text").release_value_but_fixme_should_propagate_errors());
         m_statusbar->set_text(2, String::formatted("Selection Start: {}", selection_start).release_value_but_fixme_should_propagate_errors());
         m_statusbar->set_text(3, String::formatted("Selection End: {}", selection_end).release_value_but_fixme_should_propagate_errors());
         m_statusbar->set_text(4, String::formatted("Selected Bytes: {}", m_editor->selection_size()).release_value_but_fixme_should_propagate_errors());
@@ -279,6 +283,8 @@ HexEditorWidget::HexEditorWidget()
     GUI::Application::the()->on_action_leave = [this](GUI::Action&) {
         m_statusbar->set_override_text({});
     };
+
+    return {};
 }
 
 void HexEditorWidget::update_inspector_values(size_t position)
@@ -647,3 +653,5 @@ void HexEditorWidget::drop_event(GUI::DropEvent& event)
         open_file(response.value().filename(), response.value().release_stream());
     }
 }
+
+}
diff --git a/Userland/Applications/HexEditor/HexEditorWindow.gml b/Userland/Applications/HexEditor/HexEditorWidget.gml
similarity index 97%
rename from Userland/Applications/HexEditor/HexEditorWindow.gml
rename to Userland/Applications/HexEditor/HexEditorWidget.gml
index 0b7a4e89ee8..9aaedf335ec 100644
--- a/Userland/Applications/HexEditor/HexEditorWindow.gml
+++ b/Userland/Applications/HexEditor/HexEditorWidget.gml
@@ -1,4 +1,4 @@
-@GUI::Widget {
+@HexEditor::HexEditorWidget {
     name: "main"
     fill_with_background_color: true
     layout: @GUI::VerticalBoxLayout {
diff --git a/Userland/Applications/HexEditor/HexEditorWidget.h b/Userland/Applications/HexEditor/HexEditorWidget.h
index a18289a83b5..500e7592900 100644
--- a/Userland/Applications/HexEditor/HexEditorWidget.h
+++ b/Userland/Applications/HexEditor/HexEditorWidget.h
@@ -19,18 +19,23 @@
 #include <LibGUI/Widget.h>
 #include <LibGUI/Window.h>
 
-class HexEditor;
-
+namespace HexEditor {
 class HexEditorWidget final : public GUI::Widget {
-    C_OBJECT(HexEditorWidget)
+    C_OBJECT_ABSTRACT(HexEditorWidget)
 public:
     virtual ~HexEditorWidget() override = default;
     void open_file(String const& filename, NonnullOwnPtr<Core::File>);
     ErrorOr<void> initialize_menubar(GUI::Window&);
     bool request_close();
 
+    static ErrorOr<NonnullRefPtr<HexEditorWidget>> create();
+
+protected:
+    static ErrorOr<NonnullRefPtr<HexEditorWidget>> try_create();
+
 private:
-    HexEditorWidget();
+    ErrorOr<void> setup();
+    HexEditorWidget() = default;
     void set_path(StringView);
     void update_title();
     void set_search_results_visible(bool visible);
@@ -85,3 +90,5 @@ private:
     bool m_value_inspector_little_endian { true };
     bool m_selecting_from_inspector { false };
 };
+
+}
diff --git a/Userland/Applications/HexEditor/main.cpp b/Userland/Applications/HexEditor/main.cpp
index b23434d3aa8..ade8c15f239 100644
--- a/Userland/Applications/HexEditor/main.cpp
+++ b/Userland/Applications/HexEditor/main.cpp
@@ -37,7 +37,8 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
     window->restore_size_and_position("HexEditor"sv, "Window"sv, { { 640, 400 } });
     window->save_size_and_position_on_close("HexEditor"sv, "Window"sv);
 
-    auto hex_editor_widget = window->set_main_widget<HexEditorWidget>();
+    auto hex_editor_widget = TRY(HexEditor::HexEditorWidget::create());
+    window->set_main_widget(hex_editor_widget);
 
     window->on_close_request = [&]() -> GUI::Window::CloseRequestDecision {
         if (hex_editor_widget->request_close())