diff --git a/degeon_py/CRC35.otf b/degeon_py/CRC35.otf
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diff --git a/degeon_py/main.py b/degeon_py/main.py
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+++ b/degeon_py/main.py
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+from __future__ import annotations
+import typing
+
+import pygame
+import degeon_core as dc
+from dataclasses import dataclass, field
+from abc import ABC
+
+# Configuration variables and loading
+pygame.init()
+font = pygame.font.Font('CRC35.otf', 25)
+FPS = 30
+
+RED = 0xFF0000
+BLUE = 0x0000FF
+YELLOW = 0xFFC91F
+GREEN = 0x00FF00
+MAGENTA = 0xFF03B8
+CYAN = 0x00FFCC
+BLACK = 0x000
+WHITE = 0xFFFFFF
+DARK_BLUE = 0x282e46
+GREY = 0x383e4F
+COLORS = [RED, BLUE, YELLOW, GREEN, MAGENTA, CYAN]
+
+WIDTH = 900
+HEIGHT = 700
+
+
+@dataclass
+class ChatSelector:
+    """
+    The widget with the list of chats.
+    It's a dataclass, it should be initialized using the `from_chats` classmethod
+
+    Attributes:
+        chats (List[dc.Chat]): list of all chats, where each chat is a native Rust struct Chat
+        active_chat (int): the index of the current selected chat
+        hovered_chat (int or None): the index of the current hovered chat
+        width (int): the width of this widget
+        height (int): the height of this widget
+        chat_height (int): height of one chat
+    """
+    chats: typing.List['dc.Chat'] = field(default_factory=list)
+    active_chat: int = 0
+    hovered_chat: typing.Optional[int] = None
+    width: int = WIDTH // 3
+    height: int = HEIGHT
+    chat_height: int = HEIGHT // 10
+
+    def render(self) -> pygame.Surface:
+        """
+        Creates a pygame surface and draws the list of chats on it
+        :return: the surface with the chat selector
+        """
+        surface: pygame.Surface = pygame.Surface((self.width, self.chat_height * len(self.chats)))
+        for i, chat in enumerate(self.chats):
+            bg_color, text_color = DARK_BLUE, WHITE
+            if i == self.hovered_chat:
+                bg_color = GREY
+            if i == self.active_chat:
+                bg_color = BLUE
+            title_surface: pygame.Surface = font.render(chat.profile.name, True, text_color)
+            pygame.draw.rect(surface, bg_color, (0, i * self.chat_height + 1, self.width, self.chat_height - 2))
+            surface.blit(title_surface, (i * self.chat_height + 10))
+        return surface
+
+    def process_event(self, event: pygame.event.Event):
+        """
+        Process a click: select the necessary chat if this click is in the widget
+        :param event: pygame event
+        """
+        if event.type == pygame.MOUSEBUTTONUP and event.pos[0] < self.width:
+            self.active_chat = event.pos[1] // self.chat_height
+            self.hovered_chat = None
+        if event.type == pygame.MOUSEMOTION:
+            if 0 < event.pos[0] < self.width \
+                    and 0 < event.pos[1] < min(self.height, len(self.chats) * self.chat_height) - 2:
+                self.hovered_chat = event.pos[1] // self.chat_height
+            else:
+                self.hovered_chat = None
+
+    @classmethod
+    def from_chats(cls, chats: typing.List['dc.Chat'], **kwargs) -> ChatSelector:
+        return cls(chats, **kwargs)
+
+
+@dataclass
+class ActiveChat:
+    """
+    The widget with the current chat
+
+    Attributes:
+        :param chat (dc.Chat): the chat (Rust Chat type)
+    """
+
+    chat: 'dc.Chat'
+
+
+@dataclass
+class Degeon:
+    """
+    The main class with everything connected to the app: the data, the
+
+    Attributes
+    """
+    core: 'dc.Degeon'
+    chat_selector: ChatSelector
+    has_profile_popup_opened: bool = False
+    has_no_peers_popup: bool = False
+
+    @classmethod
+    def new(cls) -> Degeon:
+        """
+        Create a new default instance with settings from file
+        :return: a Degeon instance
+        """
+        pass   # todo
+
+    def render(self, screen: pygame.Surface):
+        """
+        Render everything on the screen
+        :param screen: the main screen
+        """
+        chats_surface = self.chat_selector.render()
+        screen.blit(chats_surface, (0, 0))
+
+    def tick(self):
+        """
+        Handle incoming messages, update chats, create no_peers popup if necessary
+        """
+        pass   # todo