diff --git a/unshell-gui/Cargo.lock b/unshell-gui/Cargo.lock
index 7ed1624..e48ca3d 100644
--- a/unshell-gui/Cargo.lock
+++ b/unshell-gui/Cargo.lock
@@ -751,6 +751,25 @@ dependencies = [
  "winit",
 ]
 
+[[package]]
+name = "egui_tiles"
+version = "0.14.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ebfac3ca35f5e4fe217d3b03312111b234fe55ce059faf62b4cb47f7cf6d54f1"
+dependencies = [
+ "ahash",
+ "egui",
+ "itertools",
+ "log",
+ "serde",
+]
+
+[[package]]
+name = "either"
+version = "1.15.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "48c757948c5ede0e46177b7add2e67155f70e33c07fea8284df6576da70b3719"
+
 [[package]]
 name = "emath"
 version = "0.33.2"
@@ -1300,6 +1319,15 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
+[[package]]
+name = "itertools"
+version = "0.14.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2b192c782037fadd9cfa75548310488aabdbf3d2da73885b31bd0abd03351285"
+dependencies = [
+ "either",
+]
+
 [[package]]
 name = "itoa"
 version = "1.0.15"
@@ -2686,6 +2714,7 @@ dependencies = [
  "eframe",
  "egui",
  "egui_extras",
+ "egui_tiles",
  "log",
  "pretty_env_logger",
  "rand 0.9.2",
diff --git a/unshell-gui/Cargo.toml b/unshell-gui/Cargo.toml
index 50bb1c7..cd34b52 100644
--- a/unshell-gui/Cargo.toml
+++ b/unshell-gui/Cargo.toml
@@ -29,6 +29,7 @@ log = "0.4.27"
 serde = { version = "1.0.219", features = ["derive"] }
 egui_extras = "0.33.2"
 rand = "0.9.2"
+egui_tiles = "0.14.0"
 
 # native:
 [target.'cfg(not(target_arch = "wasm32"))'.dependencies]
diff --git a/unshell-gui/src/app.rs b/unshell-gui/src/app/app.rs
similarity index 67%
rename from unshell-gui/src/app.rs
rename to unshell-gui/src/app/app.rs
index d9479b7..9d528f0 100644
--- a/unshell-gui/src/app.rs
+++ b/unshell-gui/src/app/app.rs
@@ -1,30 +1,37 @@
-use crate::{config::Config, flowchart::FlowChart};
+use egui::Frame;
+use egui_tiles::Tree;
+
+use crate::app::{AppState, windows::WindowWrapper};
 
 /// We derive Deserialize/Serialize so we can persist app state on shutdown.
 #[derive(serde::Deserialize, serde::Serialize)]
 #[serde(default)] // if we add new fields, give them default values when deserializing old state
 pub struct TemplateApp {
-    tab: Tab,
-
-    flowchart: FlowChart,
-    config: Config,
-}
-
-#[derive(serde::Deserialize, serde::Serialize, PartialEq, Eq)]
-pub enum Tab {
-    Flowchart,
-    Test,
+    // tab: Tab,
+    state: AppState,
+    tree: Tree<WindowWrapper>,
 }
 
 impl Default for TemplateApp {
     fn default() -> Self {
+        // let mut tiles = egui_tiles::Tiles::default();
+
+        // let invis_1 = tiles.insert_pane(WindowWrapper {
+        //     nr: 0,
+        //     window: AppWindow::None,
+        // });
+        // let invis_2 = tiles.insert_pane(WindowWrapper {
+        //     nr: 0,
+        //     window: AppWindow::None,
+        // });
+
+        // tiles.set_visible(invis_1, false);
+        // tiles.set_visible(invis_2, false);
+        // let root = tiles.insert_horizontal_tile(vec![invis_1]);
+
         Self {
-            tab: Tab::Flowchart,
-            // Example stuff:
-            // label: "Hello World!".to_owned(),
-            // value: 2.7,
-            flowchart: FlowChart::new(),
-            config: Config::new(),
+            state: AppState::default(),
+            tree: egui_tiles::Tree::new_horizontal("tree_root", Vec::new()),
         }
     }
 }
@@ -67,24 +74,14 @@ impl eframe::App for TemplateApp {
                 ui.menu_button("View", |ui| {
                     ui.label("View");
 
-                    if ui
-                        .selectable_label(self.tab == Tab::Flowchart, "Network")
-                        .clicked()
-                    {
-                        self.tab = Tab::Flowchart;
-                    }
-
-                    if ui
-                        .selectable_label(self.tab == Tab::Test, self.config.title())
-                        .clicked()
-                    {
-                        self.tab = Tab::Test;
-                    }
+                    self.state.labels(&mut self.tree, ui);
                 });
 
                 ui.with_layout(egui::Layout::right_to_left(egui::Align::Center), |ui| {
                     egui::widgets::global_theme_preference_switch(ui);
                 });
+
+                // ui.style
             });
         });
 
@@ -95,13 +92,8 @@ impl eframe::App for TemplateApp {
             });
         });
 
-        egui::CentralPanel::default().show(ctx, |ui| match self.tab {
-            Tab::Flowchart => {
-                self.flowchart.paint(ui);
-            }
-            Tab::Test => {
-                self.config.update(ui);
-            }
-        });
+        egui::CentralPanel::default()
+            .frame(Frame::central_panel(&ctx.style()).inner_margin(0))
+            .show(ctx, |ui| self.tree.ui(&mut self.state, ui));
     }
 }
diff --git a/unshell-gui/src/app/mod.rs b/unshell-gui/src/app/mod.rs
new file mode 100644
index 0000000..875e3f8
--- /dev/null
+++ b/unshell-gui/src/app/mod.rs
@@ -0,0 +1,125 @@
+mod app;
+mod windows;
+
+use std::collections::HashMap;
+
+pub use app::TemplateApp;
+use egui_tiles::{TileId, Tree};
+use log::info;
+
+use crate::{app::windows::WindowWrapper, config::Config, flowchart::FlowChart};
+
+#[derive(Default, serde::Deserialize, serde::Serialize)]
+struct AppState {
+    pub open_windows: HashMap<AppWindow, TileId>,
+
+    pub flowchart: FlowChart,
+    pub config: Config,
+}
+
+impl AppState {
+    pub fn labels(&mut self, tree: &mut Tree<WindowWrapper>, ui: &mut egui::Ui) {
+        for (i, (key, name)) in (vec![
+            (AppWindow::Flowchart, "Flowchart"),
+            (AppWindow::Config, "Config"),
+        ])
+        .iter()
+        .enumerate()
+        {
+            let enabled = self.open_windows.contains_key(&key);
+
+            if ui.selectable_label(enabled, *name).clicked() {
+                // if enabled {
+                //     let tid = *self.open_windows.get(&key).unwrap();
+                //     tree.remove_recursively(tid);
+                //     tree.tiles.remove(tid);
+                //     self.open_windows.remove(&key);
+
+                //     // if self.open_windows.is_empty()
+                // } else {
+                let tid = tree.tiles.insert_pane(WindowWrapper {
+                    nr: i + 1,
+                    window: *key,
+                });
+
+                match self.open_windows.len() {
+                    0 => {
+                        tree.root = Some(tid);
+                    }
+                    1 => {
+                        let old_root = tree.root.unwrap();
+                        let tab_id = tree.tiles.insert_tab_tile(vec![old_root, tid]);
+                        tree.root = Some(tab_id);
+                    }
+                    _ => {
+                        let pid = tree.tiles.insert_tab_tile(vec![tid]);
+                        tree.move_tile_to_container(pid, tree.root.unwrap().clone(), 0, true);
+                    }
+                }
+
+                self.open_windows.insert(key.clone(), tid);
+            }
+        }
+
+        // if ui
+        //     .selectable_label(
+        //         self.open_windows.contains_key(&AppWindow::Flowchart),
+        //         "Network",
+        //     )
+        //     .clicked()
+        // {
+        //     // self.open_windows. = Tab::Flowchart;
+        // }
+
+        // if ui
+        //     .selectable_label(self.open_windows.contains_key(&AppWindow::Config), "Config")
+        //     .clicked()
+        // {
+        //     // self.open_windows. = Tab::Flowchart;
+        // }
+
+        // if ui
+        //     .selectable_label(self.tab == Tab::Test, self.config.title())
+        //     .clicked()
+        // {
+        //     self.tab = Tab::Test;
+        // }
+    }
+
+    // fn contains(&self, key: &AppWindow)
+
+    // fn toggle(&mut self, key: &AppWindow) {
+    //     if self.
+    // }
+}
+
+// impl Default for AppState {
+//     fn default() -> Self {
+//         Self {
+//             open_windows: HashMap::from([
+//                 (AppWindow::Flowchart, false),
+//                 (AppWindow::Config, false),
+//             ]),
+
+//             flowchart: Default::default(),
+//             config: Default::default(),
+//         }
+//     }
+// }
+
+#[derive(Clone, Copy, serde::Deserialize, serde::Serialize, PartialEq, Eq, Hash)]
+enum AppWindow {
+    None,
+    Flowchart,
+    Config,
+}
+
+impl AppWindow {
+    fn update(&self, state: &mut AppState, ui: &mut egui::Ui) {
+        match self {
+            AppWindow::None => {}
+            AppWindow::Flowchart => state.flowchart.paint(ui),
+            AppWindow::Config => state.config.update(ui),
+        }
+    }
+}
diff --git a/unshell-gui/src/app/windows.rs b/unshell-gui/src/app/windows.rs
new file mode 100644
index 0000000..d42663b
--- /dev/null
+++ b/unshell-gui/src/app/windows.rs
@@ -0,0 +1,46 @@
+use crate::app::{AppState, AppWindow};
+
+#[derive(serde::Deserialize, serde::Serialize)]
+pub struct WindowWrapper {
+    pub nr: usize,
+    pub window: AppWindow,
+}
+
+impl egui_tiles::Behavior<WindowWrapper> for AppState {
+    fn tab_title_for_pane(&mut self, pane: &WindowWrapper) -> egui::WidgetText {
+        format!("Pane {}", pane.nr).into()
+    }
+
+    fn pane_ui(
+        &mut self,
+        ui: &mut egui::Ui,
+        _tile_id: egui_tiles::TileId,
+        pane: &mut WindowWrapper,
+    ) -> egui_tiles::UiResponse {
+        let mut ret = egui_tiles::UiResponse::None;
+
+        ui.horizontal(|ui| {
+            let titlebar = ui.interact(
+                ui.max_rect(),
+                ui.id().with(&format!("Pane_{}_sense", pane.nr)),
+                egui::Sense::drag(),
+            );
+
+            if titlebar.drag_started() {
+                ret = egui_tiles::UiResponse::DragStarted;
+            }
+            if titlebar.hovered() {
+                ui.ctx().set_cursor_icon(egui::CursorIcon::Grab);
+            }
+
+            let color = egui::epaint::Hsva::new(0.103 * pane.nr as f32, 0.5, 0.5, 1.0);
+            ui.painter().rect_filled(ui.max_rect(), 0.0, color);
+
+            ui.label("Test");
+        });
+
+        pane.window.update(self, ui);
+
+        ret
+    }
+}
diff --git a/unshell-gui/src/config/mod.rs b/unshell-gui/src/config/mod.rs
index 328ac06..9ab92a5 100644
--- a/unshell-gui/src/config/mod.rs
+++ b/unshell-gui/src/config/mod.rs
@@ -15,8 +15,8 @@ enum ConfigState {
     EditConfig(usize, PayloadConfig),
 }
 
-impl Config {
-    pub fn new() -> Self {
+impl Default for Config {
+    fn default() -> Self {
         Self {
             state: ConfigState::Base,
             current_payloads: vec![PayloadConfig {
@@ -26,14 +26,16 @@ impl Config {
             }],
         }
     }
+}
 
-    pub fn title(&self) -> &str {
-        match self.state {
-            ConfigState::Base => "Config",
-            ConfigState::NewConfig(..) => "Config/New",
-            ConfigState::EditConfig(..) => "Config/Edit",
-        }
-    }
+impl Config {
+    // pub fn title(&self) -> &str {
+    //     match self.state {
+    //         ConfigState::Base => "Config",
+    //         ConfigState::NewConfig(..) => "Config/New",
+    //         ConfigState::EditConfig(..) => "Config/Edit",
+    //     }
+    // }
 
     pub fn update(&mut self, ui: &mut Ui) {
         match &mut self.state {
diff --git a/unshell-gui/src/flowchart/container.rs b/unshell-gui/src/flowchart/container.rs
index 836ebfe..58283a1 100644
--- a/unshell-gui/src/flowchart/container.rs
+++ b/unshell-gui/src/flowchart/container.rs
@@ -35,10 +35,6 @@ impl DraggableContainer {
         }
     }
 
-    pub fn get_pos(&self, center: &Pos2) -> Pos2 {
-        center.clone() + self.pos
-    }
-
     pub fn show<R>(
         &mut self,
         ui: &mut egui::Ui,
@@ -82,17 +78,6 @@ impl DraggableContainer {
                 let new_center = pointer_pos + self.drag_offset;
                 self.pos = new_center - clip_center;
             }
-
-            // egui::Frame::default()
-            //     .stroke(ui.visuals().widgets.noninteractive.bg_stroke)
-            //     .corner_radius(ui.visuals().widgets.noninteractive.corner_radius)
-            //     .show(ui, |ui| {
-            //         ui.label(egui::RichText::new("Content").color(egui::Color32::WHITE));
-            //         // self.frame.show(ui, |ui| {
-            //         //     ui.style_mut().wrap_mode = Some(egui::TextWrapMode::Extend);
-            //         //     ui.label(egui::RichText::new("Content").color(egui::Color32::WHITE));
-            //         // });
-            //     });
         }
 
         if response.drag_stopped() {
diff --git a/unshell-gui/src/flowchart/flowchart.rs b/unshell-gui/src/flowchart/flowchart.rs
index 7533037..5bc734f 100644
--- a/unshell-gui/src/flowchart/flowchart.rs
+++ b/unshell-gui/src/flowchart/flowchart.rs
@@ -1,8 +1,4 @@
-use egui::Scene;
-use egui::Shape;
-use egui::Ui;
-use egui::Vec2;
-use egui::{Color32, Painter, Pos2, Rect};
+use egui::{Color32, Painter, Pos2, Rect, Scene, Shape, Ui};
 
 use crate::flowchart::CONNECTION_STROKE;
 use crate::flowchart::GROUP_BORDER_MARGIN;
@@ -19,8 +15,8 @@ pub struct FlowChart {
     pub groups: Vec<Vec<usize>>,
 }
 
-impl FlowChart {
-    pub fn new() -> Self {
+impl Default for FlowChart {
+    fn default() -> Self {
         let mut this = Self {
             scene_rect: Rect::ZERO,
             containers: vec![
@@ -41,7 +37,9 @@ impl FlowChart {
 
         this
     }
+}
 
+impl FlowChart {
     fn paint_bg(rect: &Rect, painter: &Painter) {
         let h_start = (rect.min.x / TARGET_LINE_GAP).round() as i32;
         let h_end = ((rect.min.x + rect.width()) / TARGET_LINE_GAP).round() as i32 + 1;
@@ -56,19 +54,13 @@ impl FlowChart {
         }
     }
 
-    fn paint_groups(
-        rect: &Rect,
-        groups: &Vec<Vec<usize>>,
-        containers: &Vec<DraggableContainer>,
-        ui: &mut Ui,
-    ) {
-        let center = rect.center();
+    fn paint_groups(groups: &Vec<Vec<usize>>, containers: &Vec<DraggableContainer>, ui: &mut Ui) {
         for group in groups {
             let mut points = Vec::new();
 
             for n in group {
                 let container = &containers[*n];
-                let pos = container.get_pos(&Pos2::ZERO);
+                let pos = container.pos.to_pos2();
                 let size = container.size;
                 points.append(&mut vec![
                     Pos2 {
@@ -114,16 +106,11 @@ impl FlowChart {
         let response = scene
             .show(ui, &mut self.scene_rect, |mut ui| {
                 Self::paint_bg(rect, ui.painter());
-                Self::paint_groups(rect, groups, containers, &mut ui);
-
-                let center = Pos2::ZERO;
+                Self::paint_groups(groups, containers, &mut ui);
 
                 for (a, b) in &self.connections {
                     ui.painter().line_segment(
-                        [
-                            containers[*a].get_pos(&center),
-                            containers[*b].get_pos(&center),
-                        ],
+                        [containers[*a].pos.to_pos2(), containers[*b].pos.to_pos2()],
                         CONNECTION_STROKE,
                     );
                 }
diff --git a/unshell-gui/src/flowchart/mod.rs b/unshell-gui/src/flowchart/mod.rs
index efa99cd..b465c11 100644
--- a/unshell-gui/src/flowchart/mod.rs
+++ b/unshell-gui/src/flowchart/mod.rs
@@ -23,6 +23,6 @@ const GROUP_BORDER_MARGIN: f32 = 20.;
 static REPULSION_STRENGTH: f32 = 100000.0; // repulsion_strength
 static ATTRACTION_STRENGTH: f32 = 0.01; // attraction_strength
 static CENTER_ATTRACTION_STRENGTH: f32 = 0.01; // attraction_strength
-static GROUP_ATTRACTION_STRENGTH: f32 = 0.001; // attraction_strength
+static GROUP_ATTRACTION_STRENGTH: f32 = 0.01; // attraction_strength
 static REST_LENGTH: f32 = 50.0; // rest_length
 static DAMPING: f32 = 0.9; // damping
diff --git a/unshell-gui/src/lib.rs b/unshell-gui/src/lib.rs
index d86a283..9166cf5 100644
--- a/unshell-gui/src/lib.rs
+++ b/unshell-gui/src/lib.rs
@@ -3,9 +3,6 @@
 #[allow(unused_extern_crates)]
 extern crate log;
 
-mod app;
-pub use app::TemplateApp;
-
+pub mod app;
 mod config;
-
 mod flowchart;
diff --git a/unshell-gui/src/main.rs b/unshell-gui/src/main.rs
index 1906112..6d0f3cc 100644
--- a/unshell-gui/src/main.rs
+++ b/unshell-gui/src/main.rs
@@ -1,7 +1,7 @@
 #![warn(clippy::all, rust_2018_idioms)]
 #![cfg_attr(not(debug_assertions), windows_subsystem = "windows")] // hide console window on Windows in release
 
-use unshell_gui::TemplateApp;
+use unshell_gui::app::TemplateApp;
 
 // When compiling natively:
 #[cfg(not(target_arch = "wasm32"))]