diff --git a/CHANGELOG.md b/CHANGELOG.md
index 50ed167..faf81e5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,7 @@
 - Rearrange menus/breadcrumbs
 - Documentation ships with source
 - Open filepicker when generating system log
+- Developers page (and -d flag)
 
 ## Changed
 - Reduce padding on keys button
diff --git a/dzgui/const/enum.py b/dzgui/const/enum.py
index 468dab7..4cc0ea1 100644
--- a/dzgui/const/enum.py
+++ b/dzgui/const/enum.py
@@ -88,6 +88,7 @@ class NotebookPage(EnumWithAttrs):
     OPTIONS = {"crumbs": strings.crumbs.options,}
     SERVERS = {"crumbs": strings.crumbs.servers,}
     THANKS = {"crumbs": strings.crumbs.thanks,}
+    DEVELOPERS = {"crumbs": strings.crumbs.developers,}
 
 
 class RowType(EnumWithAttrs):
diff --git a/dzgui/controllers/mc.py b/dzgui/controllers/mc.py
index f47ae7c..06973a2 100644
--- a/dzgui/controllers/mc.py
+++ b/dzgui/controllers/mc.py
@@ -70,6 +70,7 @@ class Controller:
         self.log_store = Gtk.ListStore(str, str, str, str)
 
         self.notes_cache: dict[str, str] = {}
+        self.is_developer: bool
 
         self.mediator: AppNavigation
         self.prefs: UserPrefs
@@ -283,6 +284,9 @@ class Controller:
     def toggle_mod_panel(self, state: bool) -> None:
         self.mediator.grid.sel_panel.set_visible(state)
 
+    def show_developers_page(self) -> None:
+        self.open_page(NotebookPage.DEVELOPERS)
+
     def open_page(self, page: NotebookPage) -> None:
         self.mediator.grid.notebook.set_page_by_enum(page)
 
@@ -543,3 +547,9 @@ class Controller:
             h = WINDOW_DEFAULT_Y
             logger.info(f"Using default window size {w},{h}")
             window.set_default_size(w, h)
+
+    def set_developer_mode(self, mode: bool) -> None:
+        self.is_developer = mode
+
+    def get_developer_mode(self) -> bool:
+        return self.is_developer
diff --git a/dzgui/data/CHANGELOG.md b/dzgui/data/CHANGELOG.md
index 50ed167..faf81e5 100644
--- a/dzgui/data/CHANGELOG.md
+++ b/dzgui/data/CHANGELOG.md
@@ -12,6 +12,7 @@
 - Rearrange menus/breadcrumbs
 - Documentation ships with source
 - Open filepicker when generating system log
+- Developers page (and -d flag)
 
 ## Changed
 - Reduce padding on keys button
diff --git a/dzgui/main.py b/dzgui/main.py
index a609b5d..e08615b 100644
--- a/dzgui/main.py
+++ b/dzgui/main.py
@@ -37,6 +37,7 @@ parser = argparse.ArgumentParser(description=flags.description)
 
 parser.add_argument("-v", "--version", action="store_true", help=flags.version)
 parser.add_argument("-u", "--uninstall", action="store_true", help=flags.uninstall)
+parser.add_argument("-d", "--developers", action="store_true", help=flags.developers)
 args = parser.parse_args()
 
 # TODO: profile load time
@@ -112,4 +113,4 @@ def main() -> None:
         XDG
     )
     print("All OK. Loading UI...")
-    App(prefs)
+    App(prefs, args.developers)
diff --git a/dzgui/util/strings.py b/dzgui/util/strings.py
index fe7fbff..c472474 100644
--- a/dzgui/util/strings.py
+++ b/dzgui/util/strings.py
@@ -265,6 +265,7 @@ class Crumbs:
     options: str
     servers: str
     thanks: str
+    developers: str
 
 @dataclass(slots=True, frozen=True)
 class Thanks:
@@ -448,7 +449,8 @@ crumbs = Crumbs(
     my_servers="Main menu > Saved servers",
     options="Options",
     servers="Main menu > Server browser",
-    thanks="Help > Special thanks"
+    thanks="Help > Special thanks",
+    developers="Options > Developers",
 )
 
 checkmark = "✓"
@@ -459,11 +461,13 @@ class Flags:
     description: str
     version: str
     uninstall: str
+    developers: str
 
 flags = Flags(
     description="DayZ server browser and mod manager",
     version="Print version information",
-    uninstall="Uninstall data files (use prior to 'pip uninstall')"
+    uninstall="Uninstall data files (use prior to 'pip uninstall')",
+    developers="Enables developer debugging features",
 )
 
 @dataclass(slots=True, frozen=True)
@@ -477,3 +481,18 @@ picker = FilePicker(
 )
 
 api_error = "API key validation error or timeout. See 'Help > Show debug log' for details."
+
+
+@dataclass(slots=True, frozen=True)
+class DevelopersPage:
+    header: str
+    paths_label: str
+    prefs_label: str
+    columns: list[str]
+
+developers = DevelopersPage(
+    header="Developers",
+    paths_label="Resolved XDG paths",
+    prefs_label="Boot preferences",
+    columns=["Key", "Value"]
+)
diff --git a/dzgui/views/base.py b/dzgui/views/base.py
index 248ca66..5983444 100644
--- a/dzgui/views/base.py
+++ b/dzgui/views/base.py
@@ -364,6 +364,10 @@ class Notebook(ScrollableMixin, Gtk.Notebook):
 
         self.thanks = ScrollableNote(Thanks(), back_button=False)
 
+        from dzgui.views.pages.devs import Developers
+        developers = Developers(MainController)
+        self.developers = ScrollableNote(developers)
+
         self.pages = {
             self.scrollable_treelist: NotebookPage.MAIN,
             self.clog: NotebookPage.CHANGELOG,
@@ -372,7 +376,8 @@ class Notebook(ScrollableMixin, Gtk.Notebook):
             self.ssu: NotebookPage.SERVERS,
             self.scroll_mod: NotebookPage.MODS,
             self.scroll_log: NotebookPage.LOG,
-            self.thanks: NotebookPage.THANKS
+            self.thanks: NotebookPage.THANKS,
+            self.developers: NotebookPage.DEVELOPERS,
         }
         self.indexes = {}
 
@@ -621,9 +626,10 @@ class Grid(Gtk.Grid):
 
 
 class App(Gtk.Application):
-    def __init__(self, prefs) -> None:
+    def __init__(self, prefs, is_developer) -> None:
         GLib.set_prgname(APP_NAME)
         MainController.set_prefs(prefs)
+        MainController.set_developer_mode(is_developer)
 
         self.win = OuterWindow()
 
diff --git a/dzgui/views/pages/devs.py b/dzgui/views/pages/devs.py
new file mode 100644
index 0000000..80f53aa
--- /dev/null
+++ b/dzgui/views/pages/devs.py
@@ -0,0 +1,84 @@
+import typing
+
+import gi  # noqa E402
+gi.require_version("Gtk", "3.0")
+from gi.repository import Gtk
+
+from dataclasses import fields
+from typing import Union, TYPE_CHECKING
+
+from dzgui.const.enum import NotebookPage
+from dzgui.util.strings import developers
+from dzgui.util.css import add_class
+
+if TYPE_CHECKING:
+    from dzgui.controllers.mc import Controller
+    from dzgui.config.userprefs import UserPrefs
+    from dzgui.config.xdg import Xdg
+
+class Developers(Gtk.Box):
+    """
+    Shows TreeViews displaying contents of parsed XDG paths
+    and user preferences
+    """
+    def __init__(self, controller: "Controller") -> None:
+        super().__init__(
+            orientation=Gtk.Orientation.VERTICAL,
+            margin_start=10,
+            margin_end=10,
+        )
+
+        self.controller = controller
+
+        heading = Gtk.Label(label=developers.header)
+        heading.set_halign(Gtk.Align.CENTER)
+        add_class(heading, "page-heading")
+
+        back_button = Gtk.Button(label="Back", halign=Gtk.Align.START)
+        back_button.connect("clicked", self._on_back_clicked)
+        paths_label = Gtk.Label()
+        paths_label.set_markup(f"<b>{developers.paths_label}</b>")
+
+        prefs_label = Gtk.Label()
+        prefs_label.set_markup(f"<b>{developers.prefs_label}</b>")
+
+        paths_tree = self._make_tree(self.controller.prefs.paths)
+        prefs_tree = self._make_tree(self.controller.prefs)
+        trees_box = Gtk.Box(orientation=Gtk.Orientation.VERTICAL, spacing=10)
+
+        path = Gtk.TreePath.new_from_indices([0])
+        paths_tree.set_cursor(path)
+        prefs_tree.set_cursor(path)
+
+        for el in [
+            paths_label,
+            paths_tree,
+            prefs_label,
+            prefs_tree
+        ]:
+            trees_box.add(el)
+
+        self.add(heading)
+        self.add(back_button)
+        self.add(trees_box)
+
+    def _on_back_clicked(self, button: Gtk.Button) -> None:
+        self.controller.open_page(NotebookPage.OPTIONS)
+
+    def _make_tree(self, prefs: Union["Xdg", "UserPrefs"]) -> Gtk.TreeView:
+        view = Gtk.TreeView()
+        renderer = Gtk.CellRendererText()
+        for i, col in enumerate(developers.columns):
+            column = Gtk.TreeViewColumn(col, renderer, text=i)
+            column.set_sizing(Gtk.TreeViewColumnSizing.FIXED)
+            view.append_column(column)
+
+        store = Gtk.ListStore(str, str)
+        for field in fields(prefs):
+            if field.name == "paths":
+                break
+            k, v = field.name, getattr(prefs, field.name)
+            store.append((k, str(v)))
+
+        view.set_model(store)
+        return view
diff --git a/dzgui/views/pages/options.py b/dzgui/views/pages/options.py
index 80f63f6..d9946de 100644
--- a/dzgui/views/pages/options.py
+++ b/dzgui/views/pages/options.py
@@ -166,6 +166,13 @@ class Options(Gtk.Box):
             hexpand=True,
         )
 
+        developers=Gtk.Button(label="Developers", halign=Gtk.Align.START)
+        developers.connect("clicked", self._on_developers_clicked)
+        if self.controller.get_developer_mode():
+            grid.attach(
+                developers, 1, 0, self.DEFAULT_WIDTH, self.DEFAULT_HEIGHT
+            )
+
         for frame in [
             self.make_frame(api_box, strings.options.api_keys),
             self.make_frame(prefs_grid, strings.options.prefs),
@@ -181,6 +188,9 @@ class Options(Gtk.Box):
         self.scrollable.add(grid)
         self.add(self.scrollable)
 
+    def _on_developers_clicked(self, button: Gtk.Button) -> None:
+        self.controller.show_developers_page()
+
     def _on_link_button_clicked(self, button: Gtk.Button, url: str) -> None:
         open_links.open_link_by_url(url)