diff --git a/ui/src/api/queries/admin/apps.ts b/ui/src/api/queries/admin/apps.ts
new file mode 100644
index 00000000..7752a049
--- /dev/null
+++ b/ui/src/api/queries/admin/apps.ts
@@ -0,0 +1,150 @@
+import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query';
+import { config } from '../../../config';
+import { useAuthStore } from '../../../auth/auth-store';
+
+export interface App {
+  id: string;
+  environmentId: string;
+  slug: string;
+  displayName: string;
+  createdAt: string;
+}
+
+export interface AppVersion {
+  id: string;
+  appId: string;
+  version: number;
+  jarPath: string;
+  jarChecksum: string;
+  jarFilename: string;
+  jarSizeBytes: number;
+  uploadedAt: string;
+}
+
+export interface Deployment {
+  id: string;
+  appId: string;
+  appVersionId: string;
+  environmentId: string;
+  status: 'STARTING' | 'RUNNING' | 'FAILED' | 'STOPPED';
+  containerId: string | null;
+  containerName: string | null;
+  errorMessage: string | null;
+  deployedAt: string | null;
+  stoppedAt: string | null;
+  createdAt: string;
+}
+
+async function appFetch<T>(path: string, options?: RequestInit): Promise<T> {
+  const token = useAuthStore.getState().accessToken;
+  const res = await fetch(`${config.apiBaseUrl}/apps${path}`, {
+    ...options,
+    headers: {
+      'Content-Type': 'application/json',
+      ...(token ? { Authorization: `Bearer ${token}` } : {}),
+      'X-Cameleer-Protocol-Version': '1',
+      ...options?.headers,
+    },
+  });
+  if (res.status === 401 || res.status === 403) {
+    useAuthStore.getState().logout();
+    throw new Error('Unauthorized');
+  }
+  if (!res.ok) throw new Error(`API error: ${res.status}`);
+  if (res.status === 204) return undefined as T;
+  const text = await res.text();
+  if (!text) return undefined as T;
+  return JSON.parse(text);
+}
+
+// --- Apps ---
+
+export function useApps(environmentId: string | undefined) {
+  return useQuery({
+    queryKey: ['apps', environmentId],
+    queryFn: () => appFetch<App[]>(`?environmentId=${environmentId}`),
+    enabled: !!environmentId,
+  });
+}
+
+export function useCreateApp() {
+  const qc = useQueryClient();
+  return useMutation({
+    mutationFn: (req: { environmentId: string; slug: string; displayName: string }) =>
+      appFetch<App>('', { method: 'POST', body: JSON.stringify(req) }),
+    onSuccess: () => qc.invalidateQueries({ queryKey: ['apps'] }),
+  });
+}
+
+export function useDeleteApp() {
+  const qc = useQueryClient();
+  return useMutation({
+    mutationFn: (id: string) =>
+      appFetch<void>(`/${id}`, { method: 'DELETE' }),
+    onSuccess: () => qc.invalidateQueries({ queryKey: ['apps'] }),
+  });
+}
+
+// --- Versions ---
+
+export function useAppVersions(appId: string | undefined) {
+  return useQuery({
+    queryKey: ['apps', appId, 'versions'],
+    queryFn: () => appFetch<AppVersion[]>(`/${appId}/versions`),
+    enabled: !!appId,
+  });
+}
+
+export function useUploadJar() {
+  const qc = useQueryClient();
+  return useMutation({
+    mutationFn: async ({ appId, file }: { appId: string; file: File }) => {
+      const token = useAuthStore.getState().accessToken;
+      const form = new FormData();
+      form.append('file', file);
+      const res = await fetch(`${config.apiBaseUrl}/apps/${appId}/versions`, {
+        method: 'POST',
+        headers: {
+          ...(token ? { Authorization: `Bearer ${token}` } : {}),
+          'X-Cameleer-Protocol-Version': '1',
+        },
+        body: form,
+      });
+      if (!res.ok) throw new Error(`Upload failed: ${res.status}`);
+      return res.json() as Promise<AppVersion>;
+    },
+    onSuccess: (_data, { appId }) =>
+      qc.invalidateQueries({ queryKey: ['apps', appId, 'versions'] }),
+  });
+}
+
+// --- Deployments ---
+
+export function useDeployments(appId: string | undefined) {
+  return useQuery({
+    queryKey: ['apps', appId, 'deployments'],
+    queryFn: () => appFetch<Deployment[]>(`/${appId}/deployments`),
+    enabled: !!appId,
+    refetchInterval: 5000,
+  });
+}
+
+export function useCreateDeployment() {
+  const qc = useQueryClient();
+  return useMutation({
+    mutationFn: ({ appId, ...req }: { appId: string; appVersionId: string; environmentId: string }) =>
+      appFetch<Deployment>(`/${appId}/deployments`, { method: 'POST', body: JSON.stringify(req) }),
+    onSuccess: (_data, { appId }) =>
+      qc.invalidateQueries({ queryKey: ['apps', appId, 'deployments'] }),
+  });
+}
+
+export function useStopDeployment() {
+  const qc = useQueryClient();
+  return useMutation({
+    mutationFn: ({ appId, deploymentId }: { appId: string; deploymentId: string }) =>
+      appFetch<Deployment>(`/${appId}/deployments/${deploymentId}/stop`, { method: 'POST' }),
+    onSuccess: (_data, { appId }) =>
+      qc.invalidateQueries({ queryKey: ['apps', appId, 'deployments'] }),
+  });
+}
diff --git a/ui/src/components/sidebar-utils.ts b/ui/src/components/sidebar-utils.ts
index e2dda212..f0b454f1 100644
--- a/ui/src/components/sidebar-utils.ts
+++ b/ui/src/components/sidebar-utils.ts
@@ -94,11 +94,12 @@ export function buildAppTreeNodes(
 }
 
 /**
- * Admin tree — static 6 nodes.
+ * Admin tree — static nodes.
  */
 export function buildAdminTreeNodes(): SidebarTreeNode[] {
   return [
     { id: 'admin:environments', label: 'Environments', path: '/admin/environments' },
+    { id: 'admin:apps', label: 'Applications', path: '/admin/apps' },
     { id: 'admin:rbac', label: 'Users & Roles', path: '/admin/rbac' },
     { id: 'admin:audit', label: 'Audit Log', path: '/admin/audit' },
     { id: 'admin:oidc', label: 'OIDC', path: '/admin/oidc' },
diff --git a/ui/src/pages/Admin/AppsPage.tsx b/ui/src/pages/Admin/AppsPage.tsx
new file mode 100644
index 00000000..824aa310
--- /dev/null
+++ b/ui/src/pages/Admin/AppsPage.tsx
@@ -0,0 +1,405 @@
+import { useState, useMemo, useRef } from 'react';
+import {
+  Avatar,
+  Badge,
+  Button,
+  Input,
+  MonoText,
+  SectionHeader,
+  Select,
+  ConfirmDialog,
+  SplitPane,
+  EntityList,
+  Spinner,
+  useToast,
+} from '@cameleer/design-system';
+import { useEnvironments } from '../../api/queries/admin/environments';
+import {
+  useApps,
+  useCreateApp,
+  useDeleteApp,
+  useAppVersions,
+  useUploadJar,
+  useDeployments,
+  useCreateDeployment,
+  useStopDeployment,
+} from '../../api/queries/admin/apps';
+import type { App, AppVersion, Deployment } from '../../api/queries/admin/apps';
+import styles from './UserManagement.module.css';
+
+function formatBytes(bytes: number): string {
+  if (bytes >= 1_048_576) return `${(bytes / 1_048_576).toFixed(1)} MB`;
+  if (bytes >= 1024) return `${(bytes / 1024).toFixed(1)} KB`;
+  return `${bytes} B`;
+}
+
+const STATUS_COLORS: Record<string, 'success' | 'warning' | 'error' | 'auto' | 'running'> = {
+  RUNNING: 'running',
+  STARTING: 'warning',
+  FAILED: 'error',
+  STOPPED: 'auto',
+};
+
+export default function AppsPage() {
+  const { toast } = useToast();
+  const { data: environments = [] } = useEnvironments();
+  const [envId, setEnvId] = useState<string>('');
+  const { data: apps = [], isLoading } = useApps(envId || undefined);
+
+  const [search, setSearch] = useState('');
+  const [selectedId, setSelectedId] = useState<string | null>(null);
+  const [creating, setCreating] = useState(false);
+  const [deleteTarget, setDeleteTarget] = useState<App | null>(null);
+
+  // Create form
+  const [newSlug, setNewSlug] = useState('');
+  const [newDisplayName, setNewDisplayName] = useState('');
+
+  // Mutations
+  const createApp = useCreateApp();
+  const deleteApp = useDeleteApp();
+
+  const selected = useMemo(
+    () => apps.find((a) => a.id === selectedId) ?? null,
+    [apps, selectedId],
+  );
+
+  const filtered = useMemo(() => {
+    if (!search) return apps;
+    const q = search.toLowerCase();
+    return apps.filter(
+      (a) =>
+        a.slug.toLowerCase().includes(q) ||
+        a.displayName.toLowerCase().includes(q),
+    );
+  }, [apps, search]);
+
+  const duplicateSlug =
+    newSlug.trim() !== '' &&
+    apps.some((a) => a.slug.toLowerCase() === newSlug.trim().toLowerCase());
+
+  async function handleCreate() {
+    if (!newSlug.trim() || !newDisplayName.trim() || !envId) return;
+    try {
+      await createApp.mutateAsync({
+        environmentId: envId,
+        slug: newSlug.trim(),
+        displayName: newDisplayName.trim(),
+      });
+      toast({ title: 'App created', description: newSlug.trim(), variant: 'success' });
+      setCreating(false);
+      setNewSlug('');
+      setNewDisplayName('');
+    } catch {
+      toast({ title: 'Failed to create app', variant: 'error', duration: 86_400_000 });
+    }
+  }
+
+  async function handleDelete() {
+    if (!deleteTarget) return;
+    try {
+      await deleteApp.mutateAsync(deleteTarget.id);
+      toast({ title: 'App deleted', description: deleteTarget.slug, variant: 'warning' });
+      if (selectedId === deleteTarget.id) setSelectedId(null);
+      setDeleteTarget(null);
+    } catch {
+      toast({ title: 'Failed to delete app', variant: 'error', duration: 86_400_000 });
+      setDeleteTarget(null);
+    }
+  }
+
+  if (!environments.length) return <Spinner size="md" />;
+
+  // Auto-select first environment if none selected
+  if (!envId && environments.length > 0) {
+    setEnvId(environments[0].id);
+    return <Spinner size="md" />;
+  }
+
+  return (
+    <>
+      <SplitPane
+        list={
+          <>
+            <div style={{ padding: '8px 12px', borderBottom: '1px solid var(--border-subtle)' }}>
+              <Select
+                value={envId}
+                onChange={(e) => { setEnvId(e.target.value); setSelectedId(null); }}
+                options={environments.map((env) => ({
+                  value: env.id,
+                  label: `${env.displayName} (${env.slug})`,
+                }))}
+              />
+            </div>
+
+            {creating && (
+              <div className={styles.createForm}>
+                <Input
+                  placeholder="Slug (e.g. my-app) *"
+                  value={newSlug}
+                  onChange={(e) => setNewSlug(e.target.value)}
+                />
+                {duplicateSlug && (
+                  <span className={styles.errorText}>Slug already exists</span>
+                )}
+                <Input
+                  placeholder="Display name *"
+                  value={newDisplayName}
+                  onChange={(e) => setNewDisplayName(e.target.value)}
+                />
+                <div className={styles.createFormActions}>
+                  <Button size="sm" variant="ghost" onClick={() => setCreating(false)}>
+                    Cancel
+                  </Button>
+                  <Button
+                    size="sm"
+                    variant="primary"
+                    onClick={handleCreate}
+                    loading={createApp.isPending}
+                    disabled={!newSlug.trim() || !newDisplayName.trim() || duplicateSlug}
+                  >
+                    Create
+                  </Button>
+                </div>
+              </div>
+            )}
+
+            {isLoading ? (
+              <Spinner size="md" />
+            ) : (
+              <EntityList
+                items={filtered}
+                renderItem={(app) => (
+                  <>
+                    <Avatar name={app.displayName} size="sm" />
+                    <div className={styles.entityInfo}>
+                      <div className={styles.entityName}>{app.displayName}</div>
+                      <div className={styles.entityMeta}>{app.slug}</div>
+                    </div>
+                  </>
+                )}
+                getItemId={(app) => app.id}
+                selectedId={selectedId ?? undefined}
+                onSelect={setSelectedId}
+                searchPlaceholder="Search apps..."
+                onSearch={setSearch}
+                addLabel="+ Add app"
+                onAdd={() => setCreating(true)}
+                emptyMessage="No apps in this environment"
+              />
+            )}
+          </>
+        }
+        detail={
+          selected ? (
+            <AppDetail
+              app={selected}
+              environments={environments}
+              onDelete={() => setDeleteTarget(selected)}
+            />
+          ) : null
+        }
+        emptyMessage="Select an app to view details"
+      />
+
+      <ConfirmDialog
+        open={deleteTarget !== null}
+        onClose={() => setDeleteTarget(null)}
+        onConfirm={handleDelete}
+        message={`Delete app "${deleteTarget?.displayName}"? All versions and deployments will be removed. This cannot be undone.`}
+        confirmText={deleteTarget?.slug ?? ''}
+        loading={deleteApp.isPending}
+      />
+    </>
+  );
+}
+
+// --- App Detail Pane ---
+
+function AppDetail({
+  app,
+  environments,
+  onDelete,
+}: {
+  app: App;
+  environments: { id: string; slug: string; displayName: string }[];
+  onDelete: () => void;
+}) {
+  const { toast } = useToast();
+  const { data: versions = [] } = useAppVersions(app.id);
+  const { data: deployments = [] } = useDeployments(app.id);
+  const uploadJar = useUploadJar();
+  const createDeployment = useCreateDeployment();
+  const stopDeployment = useStopDeployment();
+  const fileInputRef = useRef<HTMLInputElement>(null);
+
+  const envName = environments.find((e) => e.id === app.environmentId)?.displayName ?? app.environmentId;
+  const sortedVersions = useMemo(
+    () => [...versions].sort((a, b) => b.version - a.version),
+    [versions],
+  );
+
+  async function handleUpload(e: React.ChangeEvent<HTMLInputElement>) {
+    const file = e.target.files?.[0];
+    if (!file) return;
+    try {
+      const v = await uploadJar.mutateAsync({ appId: app.id, file });
+      toast({ title: `Version ${v.version} uploaded`, description: file.name, variant: 'success' });
+    } catch {
+      toast({ title: 'Upload failed', variant: 'error', duration: 86_400_000 });
+    }
+    if (fileInputRef.current) fileInputRef.current.value = '';
+  }
+
+  async function handleDeploy(versionId: string) {
+    try {
+      await createDeployment.mutateAsync({
+        appId: app.id,
+        appVersionId: versionId,
+        environmentId: app.environmentId,
+      });
+      toast({ title: 'Deployment started', variant: 'success' });
+    } catch {
+      toast({ title: 'Deploy failed', variant: 'error', duration: 86_400_000 });
+    }
+  }
+
+  async function handleStop(deploymentId: string) {
+    try {
+      await stopDeployment.mutateAsync({ appId: app.id, deploymentId });
+      toast({ title: 'Deployment stopped', variant: 'warning' });
+    } catch {
+      toast({ title: 'Stop failed', variant: 'error', duration: 86_400_000 });
+    }
+  }
+
+  return (
+    <>
+      <div className={styles.detailHeader}>
+        <Avatar name={app.displayName} size="lg" />
+        <div className={styles.detailHeaderInfo}>
+          <div className={styles.detailName}>{app.displayName}</div>
+          <div className={styles.detailEmail}>{app.slug}</div>
+        </div>
+        <Button size="sm" variant="danger" onClick={onDelete}>
+          Delete
+        </Button>
+      </div>
+
+      <div className={styles.metaGrid}>
+        <span className={styles.metaLabel}>ID</span>
+        <MonoText size="xs">{app.id}</MonoText>
+        <span className={styles.metaLabel}>Slug</span>
+        <span className={styles.metaValue}>{app.slug}</span>
+        <span className={styles.metaLabel}>Environment</span>
+        <span className={styles.metaValue}>{envName}</span>
+        <span className={styles.metaLabel}>Created</span>
+        <span className={styles.metaValue}>
+          {new Date(app.createdAt).toLocaleDateString()}
+        </span>
+      </div>
+
+      {/* Versions */}
+      <SectionHeader>
+        Versions ({versions.length})
+      </SectionHeader>
+      <div style={{ marginBottom: 8 }}>
+        <input
+          ref={fileInputRef}
+          type="file"
+          accept=".jar"
+          style={{ display: 'none' }}
+          onChange={handleUpload}
+        />
+        <Button
+          size="sm"
+          variant="secondary"
+          onClick={() => fileInputRef.current?.click()}
+          loading={uploadJar.isPending}
+        >
+          Upload JAR
+        </Button>
+      </div>
+      {sortedVersions.length === 0 && (
+        <p className={styles.inheritedNote}>No versions uploaded yet.</p>
+      )}
+      {sortedVersions.map((v) => (
+        <VersionRow key={v.id} version={v} onDeploy={() => handleDeploy(v.id)} />
+      ))}
+
+      {/* Deployments */}
+      <SectionHeader>
+        Deployments ({deployments.length})
+      </SectionHeader>
+      {deployments.length === 0 && (
+        <p className={styles.inheritedNote}>No deployments yet.</p>
+      )}
+      {deployments.map((d) => (
+        <DeploymentRow
+          key={d.id}
+          deployment={d}
+          versions={versions}
+          environments={environments}
+          onStop={() => handleStop(d.id)}
+        />
+      ))}
+    </>
+  );
+}
+
+// --- Version Row ---
+
+function VersionRow({ version, onDeploy }: { version: AppVersion; onDeploy: () => void }) {
+  return (
+    <div className={styles.securityRow} style={{ padding: '6px 0', borderBottom: '1px solid var(--border-subtle)' }}>
+      <Badge label={`v${version.version}`} color="auto" />
+      <span style={{ flex: 1, fontSize: 12 }}>
+        {version.jarFilename} ({formatBytes(version.jarSizeBytes)})
+      </span>
+      <span style={{ fontSize: 11, color: 'var(--text-muted)' }}>
+        {new Date(version.uploadedAt).toLocaleDateString()}
+      </span>
+      <Button size="sm" variant="secondary" onClick={onDeploy}>
+        Deploy
+      </Button>
+    </div>
+  );
+}
+
+// --- Deployment Row ---
+
+function DeploymentRow({
+  deployment,
+  versions,
+  environments,
+  onStop,
+}: {
+  deployment: Deployment;
+  versions: AppVersion[];
+  environments: { id: string; slug: string; displayName: string }[];
+  onStop: () => void;
+}) {
+  const version = versions.find((v) => v.id === deployment.appVersionId);
+  const env = environments.find((e) => e.id === deployment.environmentId);
+  const canStop = deployment.status === 'RUNNING' || deployment.status === 'STARTING';
+
+  return (
+    <div className={styles.securityRow} style={{ padding: '6px 0', borderBottom: '1px solid var(--border-subtle)' }}>
+      <Badge label={deployment.status} color={STATUS_COLORS[deployment.status] ?? 'auto'} />
+      <span style={{ flex: 1, fontSize: 12 }}>
+        {version ? `v${version.version}` : '?'} in {env?.displayName ?? '?'}
+      </span>
+      {deployment.containerName && (
+        <MonoText size="xs">{deployment.containerName}</MonoText>
+      )}
+      {deployment.errorMessage && (
+        <span style={{ fontSize: 11, color: 'var(--error)' }}>{deployment.errorMessage}</span>
+      )}
+      {canStop && (
+        <Button size="sm" variant="danger" onClick={onStop}>
+          Stop
+        </Button>
+      )}
+    </div>
+  );
+}
diff --git a/ui/src/router.tsx b/ui/src/router.tsx
index 7cceaeb9..bed2ab1b 100644
--- a/ui/src/router.tsx
+++ b/ui/src/router.tsx
@@ -18,6 +18,7 @@ const OidcConfigPage = lazy(() => import('./pages/Admin/OidcConfigPage'));
 const DatabaseAdminPage = lazy(() => import('./pages/Admin/DatabaseAdminPage'));
 const ClickHouseAdminPage = lazy(() => import('./pages/Admin/ClickHouseAdminPage'));
 const EnvironmentsPage = lazy(() => import('./pages/Admin/EnvironmentsPage'));
+const AppsPage = lazy(() => import('./pages/Admin/AppsPage'));
 const AppConfigPage = lazy(() => import('./pages/Admin/AppConfigPage'));
 const LogsPage = lazy(() => import('./pages/LogsTab/LogsPage'));
 const SwaggerPage = lazy(() => import('./pages/Swagger/SwaggerPage'));
@@ -83,6 +84,7 @@ export const router = createBrowserRouter([
                 { path: 'database', element: <SuspenseWrapper><DatabaseAdminPage /></SuspenseWrapper> },
                 { path: 'clickhouse', element: <SuspenseWrapper><ClickHouseAdminPage /></SuspenseWrapper> },
                 { path: 'environments', element: <SuspenseWrapper><EnvironmentsPage /></SuspenseWrapper> },
+                { path: 'apps', element: <SuspenseWrapper><AppsPage /></SuspenseWrapper> },
               ],
             }],
           },