diff --git a/snigdhaos-kernel-manager.py b/snigdhaos-kernel-manager.py
new file mode 100644
index 0000000..1df405a
--- /dev/null
+++ b/snigdhaos-kernel-manager.py
@@ -0,0 +1,110 @@
+#!/usr/bin/env python3
+
+import os
+import gi
+import libs.functions as fn
+from ui.ManagerGUI import ManagerGUI
+gi.require_version("Gtk", "4.0")
+from gi.repository import Gtk, Gio, GLib, Gdk
+
+base_dir = fn.os.path.dirname(fn.os.path.realpath(__file__))
+
+app_name = "Snigdha OS Kernel Manager"
+app_version = "${app_version}"
+app_name_dir = "snigdhaos-kernel-manager"
+app_id = "org.snigdhaos.kernelmanager"
+lock_file = "/tmp/skm.lock"
+pid_file = "/tmp/skm.pid"
+
+
+class Main(Gtk.Application):
+    def __init__(self):
+        super().__init__(application_id=app_id, flags=Gio.ApplicationFlags.FLAGS_NONE)
+
+    def do_activate(self):
+        # retrieves the default GLib MainContext, which represents the main event loop
+        # GLib is a low-level core library that forms the basis of GTK and GNOME.
+        default_context = GLib.MainContext.default()
+        # tries to access the active_window property of the object (self) invoking this method
+        win = self.props.active_window
+        # checks if win is None (which would mean there's no active window)
+        # if there's no active window, it creates a new instance of ManagerGUI
+        if not win:
+            win = ManagerGUI(
+                application=self,
+                app_name=app_name,
+                default_context=default_context,
+                app_version=app_version,
+            )
+        # retrieves the display associated with the window win. Gtk.Widget.get_display() 
+        # returns the display that win is on.
+        display = Gtk.Widget.get_display(win)
+
+        # sets the icon for the window win to "snigdhaos-kernel-manager-tux"
+        win.set_icon_name("snigdhaos-kernel-manager-tux")
+        # creates a new instance of Gtk.CssProvider
+        # which is used to load CSS stylesheets to style GTK widgets.
+        provider = Gtk.CssProvider.new()
+        # creates a new Gio.File object representing the CSS file at the path base_dir + "/snigdhaos-kernel-manager.css"
+        css_file = Gio.file_new_for_path(base_dir + "/snigdhaos-kernel-manager.css")
+        provider.load_from_file(css_file)
+        Gtk.StyleContext.add_provider_for_display(
+            display, 
+            provider, 
+            Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION,
+        )
+        win.present()
+
+    def do_startup(self):
+        Gtk.Application.do_startup(self)
+
+    def do_shutdown(self):
+        Gtk.Application.do_shutdown(self)
+        if os.path.exists(lock_file):
+            os.remove(lock_file)
+        if os.path.exists(pid_file):
+            os.remove(pid_file)
+
+
+def signal_handler(sig, frame):
+    Gtk.main_quit(0)
+
+if __name__ == "__main__":
+    try:
+        # signal.signal(signal.SIGINT, signal_handler)
+        if not fn.os.path.isfile(lock_file):
+            with open(pid_file, "w") as f:
+                f.write(str(fn.os.getpid()))
+            # splash = SplashScreen()
+            app = Main()
+            app.run(None)
+        else:
+            md = Gtk.MessageDialog(
+                parent=Main(),
+                flags=0,
+                message_type=Gtk.MessageType.INFO,
+                buttons=Gtk.ButtonsType.YES_NO,
+                text="%s Lock File Found" % app_name,
+            )
+            md.format_secondary_markup(
+                "A %s lock file has been found. This indicates there is already an instance of <b>%s</b> running.\n\
+                Click 'Yes' to remove the lock file and try running again"
+                % (lock_file, app_name)
+            )  # noqa
+
+            result = md.run()
+            md.destroy()
+
+            if result in (Gtk.ResponseType.OK, Gtk.ResponseType.YES):
+                pid = ""
+                if fn.os.path.exists(pid_file):
+                    with open(pid_file, "r") as f:
+                        line = f.read()
+                        pid = line.rstrip().lstrip()
+                else:
+                    fn.os.unlink(lock_file)
+                    fn.sys.exit(1)
+            else:
+                fn.sys.exit(1)
+    except Exception as e:
+        print("Exception in __main__: %s" % e)
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