diff --git a/package.json b/package.json
index d8107f7..54a8987 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "my-weekly-todo-list",
-  "version": "1.63.5",
+  "version": "1.64.0",
   "description": "A web-based weekly task management application that organizes to-dos and calendar events in a single, intuitive weekly view",
   "main": "index.js",
   "scripts": {
diff --git a/public/icons/apple-calendar.svg b/public/icons/apple-calendar.svg
new file mode 100644
index 0000000..57bde3b
--- /dev/null
+++ b/public/icons/apple-calendar.svg
@@ -0,0 +1,5 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" width="24" height="24">
+  <rect x="2" y="2" width="20" height="20" rx="4" fill="#fff" stroke="#FF3B30" stroke-width="1.5"/>
+  <rect x="2" y="2" width="20" height="7" rx="4" fill="#FF3B30"/>
+  <text x="12" y="18" font-family="Arial,sans-serif" font-size="9" font-weight="bold" fill="#333" text-anchor="middle">31</text>
+</svg>
\ No newline at end of file
diff --git a/public/icons/google-calendar.svg b/public/icons/google-calendar.svg
new file mode 100644
index 0000000..b75948e
--- /dev/null
+++ b/public/icons/google-calendar.svg
@@ -0,0 +1,9 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" width="24" height="24">
+  <rect x="2" y="2" width="20" height="20" rx="2" fill="#fff" stroke="#4285F4" stroke-width="1.5"/>
+  <rect x="2" y="2" width="20" height="6" rx="2" fill="#4285F4"/>
+  <circle cx="8" cy="14" r="1.5" fill="#EA4335"/>
+  <circle cx="12" cy="14" r="1.5" fill="#FBBC04"/>
+  <circle cx="16" cy="14" r="1.5" fill="#34A853"/>
+  <rect x="7" y="4" width="2" height="4" rx="1" fill="#fff"/>
+  <rect x="15" y="4" width="2" height="4" rx="1" fill="#fff"/>
+</svg>
\ No newline at end of file
diff --git a/public/icons/outlook-calendar.svg b/public/icons/outlook-calendar.svg
new file mode 100644
index 0000000..4b4746e
--- /dev/null
+++ b/public/icons/outlook-calendar.svg
@@ -0,0 +1,5 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" width="24" height="24">
+  <rect x="2" y="2" width="20" height="20" rx="2" fill="#fff" stroke="#0078D4" stroke-width="1.5"/>
+  <rect x="2" y="2" width="20" height="6" rx="2" fill="#0078D4"/>
+  <text x="12" y="18" font-family="Arial,sans-serif" font-size="10" font-weight="bold" fill="#0078D4" text-anchor="middle">O</text>
+</svg>
\ No newline at end of file
diff --git a/public/icons/synology-calendar.svg b/public/icons/synology-calendar.svg
new file mode 100644
index 0000000..63cffe5
--- /dev/null
+++ b/public/icons/synology-calendar.svg
@@ -0,0 +1,5 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" width="24" height="24">
+  <rect x="2" y="2" width="20" height="20" rx="2" fill="#fff" stroke="#F5A623" stroke-width="1.5"/>
+  <rect x="2" y="2" width="20" height="6" rx="2" fill="#F5A623"/>
+  <text x="12" y="18" font-family="Arial,sans-serif" font-size="10" font-weight="bold" fill="#F5A623" text-anchor="middle">S</text>
+</svg>
\ No newline at end of file
diff --git a/src/components/WeeklyView.tsx b/src/components/WeeklyView.tsx
index 437a301..0410e1b 100644
--- a/src/components/WeeklyView.tsx
+++ b/src/components/WeeklyView.tsx
@@ -326,6 +326,7 @@ const translations: Record<string, any> = {
         localization: "Localization",
         allDayEvents: "ALL-DAY EVENTS",
         syncCalendar: "Sync Calendar",
+        showProviderIcon: "Show provider icon on events",
         toggleDarkMode: "Toggle Dark Mode",
         signOut: "Sign Out",
         startHour: "Start of Day",
@@ -543,6 +544,7 @@ const translations: Record<string, any> = {
         localization: "Lokalisierung",
         allDayEvents: "GANZTÄGIGE EREIGNISSE",
         syncCalendar: "Kalender synchronisieren",
+        showProviderIcon: "Anbieter-Icon auf Terminen anzeigen",
         toggleDarkMode: "Dunkelmodus umschalten",
         signOut: "Abmelden",
         startHour: "Tagesbeginn",
@@ -759,6 +761,7 @@ const translations: Record<string, any> = {
         localization: "Localisation",
         allDayEvents: "ÉVÉNEMENTS JOURNÉE ENTIÈRE",
         syncCalendar: "Synchroniser le calendrier",
+        showProviderIcon: "Afficher l'icône du fournisseur sur les événements",
         toggleDarkMode: "Basculer le mode sombre",
         signOut: "Se déconnecter",
         startHour: "Début de journée",
@@ -975,6 +978,7 @@ const translations: Record<string, any> = {
         localization: "Localización",
         allDayEvents: "EVENTOS DE TODO EL DÍA",
         syncCalendar: "Sincronizar calendario",
+        showProviderIcon: "Mostrar icono del proveedor en eventos",
         toggleDarkMode: "Alternar modo oscuro",
         signOut: "Cerrar sesión",
         startHour: "Inicio del día",
@@ -1191,6 +1195,7 @@ const translations: Record<string, any> = {
         localization: "Localizzazione",
         allDayEvents: "EVENTI GIORNATA INTERA",
         syncCalendar: "Sincronizza calendario",
+        showProviderIcon: "Mostra icona del provider sugli eventi",
         toggleDarkMode: "Attiva/disattiva modalità scura",
         signOut: "Esci",
         startHour: "Inizio giornata",
@@ -1955,6 +1960,7 @@ export default function WeeklyView() {
         weatherLat: null,
         weatherLon: null,
         weatherLocation: "",
+        showCalendarProviderIcon: false,
     });
     const [motivationalQuote, setMotivationalQuote] = useState("");
     const [showSummary, setShowSummary] = useState(false);
@@ -7636,16 +7642,32 @@ export default function WeeklyView() {
                                                     >
                                                         {event.title}
                                                     </div>
-                                                    {event.isRecurring && (
-                                                        <Repeat
-                                                            size={12}
-                                                            style={{
-                                                                position: "absolute",
-                                                                bottom: 3,
-                                                                right: 5,
-                                                                opacity: 0.5,
-                                                            }}
-                                                        />
+                                                    {(event.isRecurring || profile.showCalendarProviderIcon) && (
+                                                        <div style={{
+                                                            position: "absolute",
+                                                            bottom: 2,
+                                                            right: 4,
+                                                            display: "flex",
+                                                            alignItems: "center",
+                                                            gap: 3,
+                                                            opacity: 0.5,
+                                                        }}>
+                                                            {event.isRecurring && <Repeat size={11} />}
+                                                            {profile.showCalendarProviderIcon && (
+                                                                <img
+                                                                    src={
+                                                                        event.source === "google" ? "/icons/google-calendar.svg"
+                                                                        : event.source === "apple" ? "/icons/apple-calendar.svg"
+                                                                        : event.source === "outlook" ? "/icons/outlook-calendar.svg"
+                                                                        : event.source === "synology" ? "/icons/synology-calendar.svg"
+                                                                        : undefined
+                                                                    }
+                                                                    alt={event.source}
+                                                                    style={{ width: 13, height: 13 }}
+                                                                    onError={(e) => { (e.target as HTMLImageElement).style.display = 'none'; }}
+                                                                />
+                                                            )}
+                                                        </div>
                                                     )}
                                                 </div>
                                             );
@@ -12267,6 +12289,16 @@ function SettingsSidebar({
                                     {t.connectedCalendars}
                                 </h3>
 
+                                <div style={{ display: "flex", alignItems: "center", gap: "8px", marginBottom: "12px" }}>
+                                    <input type="checkbox" id="showCalendarProviderIcon"
+                                        checked={profile.showCalendarProviderIcon || false}
+                                        onChange={(e) => saveField("showCalendarProviderIcon", e.target.checked)}
+                                        style={{ width: "16px", height: "16px" }} />
+                                    <label htmlFor="showCalendarProviderIcon" style={{ fontSize: "0.9rem", fontWeight: 600 }}>
+                                        {t.showProviderIcon}
+                                    </label>
+                                </div>
+
                                 {connMsg && (
                                     <div
                                         style={{