diff --git a/DemoPrograms/Demo_PyCharm_Diff_2_Files.py b/DemoPrograms/Demo_PyCharm_Diff_2_Files.py
new file mode 100644
index 00000000..fb3487ff
--- /dev/null
+++ b/DemoPrograms/Demo_PyCharm_Diff_2_Files.py
@@ -0,0 +1,46 @@
+import PySimpleGUI as sg
+
+"""
+    Compare 2 .py files using PyCharm's compare utility
+    If you use PyCharm, then you've likely used their awesome
+
+    Copyright 2021 PySimpleGUI
+"""
+
+
+def main():
+
+    layout = [[sg.T('This is your layout')],
+                [sg.Text('Filename:'), sg.Combo(values=sorted(sg.user_settings_get_entry('-filenames1-', [])),
+                        default_value=sg.user_settings_get_entry('-last filename chosen1-', None),
+                        size=(40,1), auto_size_text=False, k='-COMBO1-'), sg.FileBrowse(), sg.B('Clear History', k='-CLEAR1-')],
+                [sg.Text('Filename:'),sg.Combo(values=sorted(sg.user_settings_get_entry('-filenames2-', [])),
+                       default_value=sg.user_settings_get_entry('-last filename chosen2-', None),
+                       size=(40,1),  auto_size_text=False, k='-COMBO2-'), sg.FileBrowse(), sg.B('Clear History', k='-CLEAR2-')],
+              [sg.Button('Compare'), sg.Button('Exit')]]
+
+    window = sg.Window('Compare 2 files using PyCharm', layout)
+    while True:
+        event, values = window.read()
+        print(event, values)
+        if event in (sg.WIN_CLOSED, 'Exit'):
+            break
+        if event == 'Compare':
+            sg.user_settings_set_entry('-filenames1-', list(set(sg.user_settings_get_entry('-filenames1-', []) + [values['-COMBO1-'],])))
+            sg.user_settings_set_entry('-last filename chosen1-',  values['-COMBO1-'])
+            sg.user_settings_set_entry('-filenames2-', list(set(sg.user_settings_get_entry('-filenames2-', []) + [values['-COMBO2-'],])))
+            sg.user_settings_set_entry('-last filename chosen2-',  values['-COMBO2-'])
+            sg.execute_command_subprocess(sg.pysimplegui_user_settings.get('-editor program-', None),  'diff',values['-COMBO1-'], values['-COMBO2-'])
+            # sg.popup(f"You chose {values['-COMBO1-']} and {values['-COMBO2-']}")
+        elif event == '-CLEAR1-':
+            sg.user_settings_set_entry('-filenames1-', [])
+            sg.user_settings_set_entry('-last filename chosen1-', '')
+            window['-COMBO1-'].update(values=[], value='')
+        elif event == '-CLEAR2-':
+            sg.user_settings_set_entry('-filenames2-', [])
+            sg.user_settings_set_entry('-last filename chosen2-', '')
+            window['-COMBO2-'].update(values=[], value='')
+    window.close()
+
+if __name__ == '__main__':
+    main()
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