diff --git a/README.md b/README.md
index ced480c..2e0ecd2 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,9 @@
 
 ## Features
 
-- Funktion 1
+- sc.exe create GoSysInfoService binPath="E:\GoProjects\pcinfo\pcinfo.exe" start=auto
+- sc.exe description GoSysInfoService "Hilden PC-Info"
+- sc.exe start GoSysInfoService
 
 ---
 
diff --git a/main.go b/main.go
index c456324..1fcb83c 100644
--- a/main.go
+++ b/main.go
@@ -1,6 +1,9 @@
+//go:build windows
+
 package main
 
 import (
+	"context"
 	"encoding/json"
 	"html/template"
 	"log"
@@ -9,6 +12,7 @@ import (
 	"os"
 	"os/user"
 	"runtime"
+	"sort"
 	"strings"
 	"sync"
 	"time"
@@ -17,6 +21,9 @@ import (
 	"github.com/shirou/gopsutil/v3/disk"
 	"github.com/shirou/gopsutil/v3/host"
 	"github.com/shirou/gopsutil/v3/mem"
+
+	"golang.org/x/sys/windows/registry"
+	"golang.org/x/sys/windows/svc"
 )
 
 type NetInterface struct {
@@ -64,17 +71,126 @@ type Summary struct {
 	Disks           []DiskInfo     `json:"disks"`
 }
 
+type InstalledApp struct {
+	Name        string `json:"name"`
+	Version     string `json:"version"`
+	Publisher   string `json:"publisher"`
+	InstallDate string `json:"install_date"`
+	Source      string `json:"source"` // HKLM-64, HKLM-32, HKCU
+}
+
 var (
 	mu           sync.RWMutex
 	lastCPUUsage float64
 )
 
+func readUninstallKey(base registry.Key, path, src string) []InstalledApp {
+	k, err := registry.OpenKey(base, path, registry.ENUMERATE_SUB_KEYS|registry.QUERY_VALUE)
+	if err != nil {
+		return nil
+	}
+	defer k.Close()
+
+	names, err := k.ReadSubKeyNames(-1)
+	if err != nil {
+		return nil
+	}
+
+	apps := make([]InstalledApp, 0, len(names))
+	for _, name := range names {
+		sk, err := registry.OpenKey(k, name, registry.QUERY_VALUE)
+		if err != nil {
+			continue
+		}
+
+		// versteckte System-Komponenten ausblenden
+		if v, _, err := sk.GetIntegerValue("SystemComponent"); err == nil && v == 1 {
+			sk.Close()
+			continue
+		}
+
+		displayName, _, _ := sk.GetStringValue("DisplayName")
+		if strings.TrimSpace(displayName) == "" {
+			sk.Close()
+			continue
+		}
+
+		displayVersion, _, _ := sk.GetStringValue("DisplayVersion")
+		publisher, _, _ := sk.GetStringValue("Publisher")
+		installDate, _, _ := sk.GetStringValue("InstallDate")
+
+		apps = append(apps, InstalledApp{
+			Name:        displayName,
+			Version:     displayVersion,
+			Publisher:   publisher,
+			InstallDate: installDate,
+			Source:      src,
+		})
+
+		sk.Close()
+	}
+
+	return apps
+}
+
+func getInstalledApps() []InstalledApp {
+	var all []InstalledApp
+
+	// Maschinenweit 64-bit
+	all = append(all,
+		readUninstallKey(registry.LOCAL_MACHINE,
+			`SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall`, "HKLM-64")...,
+	)
+
+	// Maschinenweit 32-bit auf 64-bit
+	all = append(all,
+		readUninstallKey(registry.LOCAL_MACHINE,
+			`SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall`, "HKLM-32")...,
+	)
+
+	// Aktueller Benutzer
+	all = append(all,
+		readUninstallKey(registry.CURRENT_USER,
+			`SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall`, "HKCU")...,
+	)
+
+	// Deduplizieren (Name+Version+Publisher)
+	uniq := make(map[string]InstalledApp, len(all))
+	for _, a := range all {
+		key := strings.ToLower(strings.TrimSpace(a.Name) + "|" + strings.TrimSpace(a.Version) + "|" + strings.TrimSpace(a.Publisher))
+		if _, ok := uniq[key]; !ok {
+			uniq[key] = a
+		}
+	}
+
+	out := make([]InstalledApp, 0, len(uniq))
+	for _, v := range uniq {
+		out = append(out, v)
+	}
+	sort.Slice(out, func(i, j int) bool { return strings.ToLower(out[i].Name) < strings.ToLower(out[j].Name) })
+	return out
+}
+
+func appsHandler(w http.ResponseWriter, r *http.Request) {
+	apps := getInstalledApps()
+	w.Header().Set("Content-Type", "application/json")
+	enc := json.NewEncoder(w)
+	enc.SetIndent("", "  ")
+	_ = enc.Encode(apps)
+}
+
 // background sampler for CPU percentage to avoid blocking API calls
-func startCPUSampler() {
+func startCPUSampler(ctx context.Context) {
 	go func() {
 		// Prime once
 		_, _ = cpu.Percent(0, false)
 		for {
+			select {
+			case <-ctx.Done():
+				return
+			default:
+			}
+
 			pcts, err := cpu.Percent(time.Second, false)
 			if err == nil && len(pcts) > 0 {
 				mu.Lock()
@@ -92,7 +208,6 @@ func getInterfaces() []NetInterface {
 	}
 	var out []NetInterface
 	for _, ifc := range ifaces {
-		// Skip interfaces that are down
 		if (ifc.Flags & net.FlagUp) == 0 {
 			continue
 		}
@@ -115,7 +230,6 @@ func getInterfaces() []NetInterface {
 			}
 			ips = append(ips, ip.String())
 		}
-		// keep even if no IPs, to show MAC etc., but skip pure loopback
 		if isLoop {
 			continue
 		}
@@ -141,7 +255,6 @@ func getDisks() []DiskInfo {
 			continue
 		}
 
-		// read-only erkennen (gopsutil: Opts kann string ODER []string sein)
 		ro := false
 		switch opts := any(p.Opts).(type) {
 		case string:
@@ -200,7 +313,7 @@ func collectSummary() Summary {
 		Timestamp:       time.Now(),
 		Hostname:        safe(hi, func(h *host.InfoStat) string { return h.Hostname }),
 		Username:        username,
-		OS:              safe(hi, func(h *host.InfoStat) string { return h.OS }), // "windows"
+		OS:              safe(hi, func(h *host.InfoStat) string { return h.OS }),
 		Platform:        safe(hi, func(h *host.InfoStat) string { return h.Platform }),
 		PlatformVersion: safe(hi, func(h *host.InfoStat) string { return h.PlatformVersion }),
 		KernelVersion:   safe(hi, func(h *host.InfoStat) string { return h.KernelVersion }),
@@ -239,7 +352,7 @@ var page = template.Must(template.New("index").Parse(`<!doctype html>
 <meta name="viewport" content="width=device-width,initial-scale=1">
 <title>Windows Systeminfo</title>
 <style>
-  :root { --bg:#0b1220; --fg:#e7eefc; --muted:#a3b1cc; --card:#111a2e; --accent:#5aa9ff; }
+  :root { --bg:#000000; --fg:#e7eefc; --muted:#a3b1cc; --card:#111a2e; --accent:#5aa9ff; }
   *{box-sizing:border-box}
   body{max-width:980px;margin:0 auto;padding:24px;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,sans-serif;background:var(--bg);color:var(--fg)}
   h1{font-size:22px;margin:0 0 16px 0}
@@ -306,6 +419,28 @@ var page = template.Must(template.New("index").Parse(`<!doctype html>
         <tbody id="disks"></tbody>
       </table>
     </div>
+	<div class="card">
+		<div class="k">Installierte Programme</div>
+		<div class="row" style="gap:8px;align-items:center;">
+			<button id="btnLoadApps" class="pill" style="cursor:pointer;">Laden</button>
+			<input id="appsFilter" type="text" placeholder="Suchen …"
+			style="flex:1;padding:6px 10px;border-radius:8px;border:1px solid #1b2a4a;background:#0b1220;color:var(--fg)">
+			<span class="k" id="appsCount"></span>
+		</div>
+		<div class="apps">
+			<table style="width:100%;border-collapse:collapse">
+			<thead>
+				<tr>
+				<th style="text-align:left;padding:8px;border-bottom:1px solid #1b2a4a">Name</th>
+				<th style="text-align:left;padding:8px;border-bottom:1px solid #1b2a4a">Version</th>
+				<th style="text-align:left;padding:8px;border-bottom:1px solid #1b2a4a">Publisher</th>
+				<th style="text-align:left;padding:8px;border-bottom:1px solid #1b2a4a">Quelle</th>
+				</tr>
+			</thead>
+			<tbody id="apps"></tbody>
+			</table>
+		</div>
+		</div>
   </div>
 
   <footer>Aktualisiert alle 2s</footer>
@@ -362,6 +497,55 @@ async function load(){
 
 load();
 setInterval(load, 2000);
+
+let appsCache = null;
+
+function renderApps(list){
+  const tbody = document.getElementById('apps');
+  tbody.innerHTML = '';
+  (list||[]).forEach(a=>{
+    const tr = document.createElement('tr');
+    tr.innerHTML =
+      '<td class="mono" style="padding:6px 8px;border-bottom:1px solid #1b2a4a">'+(a.name||'-')+'</td>'+
+      '<td style="padding:6px 8px;border-bottom:1px solid #1b2a4a">'+(a.version||'')+'</td>'+
+      '<td style="padding:6px 8px;border-bottom:1px solid #1b2a4a">'+(a.publisher||'')+'</td>'+
+      '<td style="padding:6px 8px;border-bottom:1px solid #1b2a4a">'+(a.source||'')+'</td>';
+    tbody.appendChild(tr);
+  });
+  const c = document.getElementById('appsCount');
+  if(c) c.textContent = (list||[]).length+' Einträge';
+}
+
+async function loadAppsOnce(){
+  if(appsCache) return; // schon geladen
+  try{
+    const r = await fetch('/api/apps');
+    appsCache = await r.json();
+    renderApps(appsCache);
+  }catch(e){
+    console.error(e);
+  }
+}
+
+document.addEventListener('DOMContentLoaded', ()=>{
+  const btn = document.getElementById('btnLoadApps');
+  const inp = document.getElementById('appsFilter');
+  if(btn){ btn.addEventListener('click', loadAppsOnce); }
+  if(inp){
+    inp.addEventListener('input', ()=>{
+      if(!appsCache) return;
+      const q = inp.value.toLowerCase();
+      const filtered = appsCache.filter(a =>
+        (a.name||'').toLowerCase().includes(q) ||
+        (a.version||'').toLowerCase().includes(q) ||
+        (a.publisher||'').toLowerCase().includes(q) ||
+        (a.source||'').toLowerCase().includes(q)
+      );
+      renderApps(filtered);
+    });
+  }
+});
+
 </script>
 </body>
 </html>`))
@@ -383,16 +567,96 @@ func apiHandler(w http.ResponseWriter, r *http.Request) {
 	}
 }
 
-func main() {
-	startCPUSampler()
+// --- ab hier: Dienst-Integration ---
 
+const serviceName = "GoSysInfoService"
+
+// runHTTP startet deinen bisherigen HTTP-Server und reagiert auf ctx.Done()
+func runHTTP(ctx context.Context) error {
 	mux := http.NewServeMux()
 	mux.HandleFunc("/", indexHandler)
+	mux.HandleFunc("/api/apps", appsHandler)
 	mux.HandleFunc("/api/summary", apiHandler)
 
-	addr := "127.0.0.1:8080" // bind strictly to loopback (IPv4)
+	addr := "127.0.0.1:8080"
+
+	srv := &http.Server{
+		Addr:    addr,
+		Handler: mux,
+	}
+
+	// CPU-Sampler an das gleiche ctx hängen
+	startCPUSampler(ctx)
+
 	log.Printf("Starte lokales Dashboard auf http://%s … (nur von diesem Rechner erreichbar)", addr)
-	if err := http.ListenAndServe(addr, mux); err != nil {
+
+	// Shutdown-Goroutine
+	go func() {
+		<-ctx.Done()
+		shCtx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+		_ = srv.Shutdown(shCtx)
+		cancel() // explizit aufrufen, kein defer in der Goroutine nötig
+	}()
+
+	// Blockiert hier bis Stop oder Fehler
+	err := srv.ListenAndServe()
+	// ListenAndServe gibt bei Shutdown typischerweise http.ErrServerClosed zurück
+	if err == http.ErrServerClosed {
+		return nil
+	}
+	return err
+}
+
+// windows-svc Wrapper
+type winService struct{}
+
+func (s *winService) Execute(args []string, r <-chan svc.ChangeRequest, status chan<- svc.Status) (bool, uint32) {
+	const accepted = svc.AcceptStop | svc.AcceptShutdown
+	status <- svc.Status{State: svc.StartPending}
+
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel() // <-- neu: für alle Rückgabepfade
+
+	go func() {
+		if err := runHTTP(ctx); err != nil {
+			log.Printf("HTTP server stopped: %v", err)
+		}
+	}()
+
+	status <- svc.Status{State: svc.Running, Accepts: accepted}
+
+	for c := range r {
+		switch c.Cmd {
+		case svc.Interrogate:
+			status <- c.CurrentStatus
+		case svc.Stop, svc.Shutdown:
+			status <- svc.Status{State: svc.StopPending}
+			return false, 0 // cancel() läuft trotzdem dank defer
+		}
+	}
+
+	// falls der Channel mal zu ist
+	return false, 0
+}
+
+func main() {
+	// Prüfen, ob wir als Windows-Dienst laufen
+	isService, err := svc.IsWindowsService()
+	if err != nil {
+		log.Fatalf("svc.IsWindowsService: %v", err)
+	}
+
+	if isService {
+		// Hier spricht das Programm mit dem Service Control Manager
+		if err := svc.Run(serviceName, &winService{}); err != nil {
+			log.Fatalf("svc.Run failed: %v", err)
+		}
+		return
+	}
+
+	// normaler Konsolenmodus
+	ctx := context.Background()
+	if err := runHTTP(ctx); err != nil {
 		log.Fatal(err)
 	}
 }
diff --git a/pcinfo.exe b/pcinfo.exe
new file mode 100644
index 0000000..cc2b40d
Binary files /dev/null and b/pcinfo.exe differ