diff --git a/.github/workflows/flutter-nightly.yml b/.github/workflows/flutter-nightly.yml
index 7ce940b89..eb13edf15 100644
--- a/.github/workflows/flutter-nightly.yml
+++ b/.github/workflows/flutter-nightly.yml
@@ -599,6 +599,12 @@ jobs:
               os: ubuntu-20.04,
               extra-build-features: "flatpak",
             }
+          - {
+              arch: x86_64,
+              target: x86_64-unknown-linux-gnu,
+              os: ubuntu-20.04,
+              extra-build-features: "appimage",
+            }
           # - { target: x86_64-unknown-linux-musl   , os: ubuntu-20.04, use-cross: true }
     steps:
       - name: Maximize build space
@@ -1148,6 +1154,12 @@ jobs:
               os: ubuntu-18.04,
               extra-build-features: "flatpak",
             }
+          - {
+              arch: x86_64,
+              target: x86_64-unknown-linux-gnu,
+              os: ubuntu-18.04,
+              extra-build-features: "appimage",
+            }
           # - { target: x86_64-unknown-linux-musl   , os: ubuntu-20.04, use-cross: true }
     steps:
       - name: Checkout source code
@@ -1162,7 +1174,7 @@ jobs:
       - name: Prepare env
         run: |
           sudo apt update -y
-          sudo apt-get -qq install -y git curl wget nasm yasm libgtk-3-dev
+          sudo apt-get -qq install -y git curl wget nasm yasm libgtk-3-dev libarchive-tools
           mkdir -p ./target/release/
 
       - name: Restore the rustdesk lib file
@@ -1217,7 +1229,8 @@ jobs:
         shell: bash
         run: |
           for name in rustdesk*??.deb; do
-              mv "$name" "${name%%.deb}-${{ matrix.job.target }}-${{ matrix.job.os }}.deb"
+              # use cp to duplicate deb files to fit other packages.
+              cp "$name" "${name%%.deb}-${{ matrix.job.target }}-${{ matrix.job.os }}.deb"
           done
 
       - name: Publish debian package
@@ -1285,6 +1298,29 @@ jobs:
           files: |
             res/rustdesk*.zst
 
+      - name: Build appimage package
+        if: ${{ matrix.job.extra-build-features == 'appimage' }}
+        shell: bash
+        run: |
+          # set-up appimage-builder
+          pushd /tmp
+          wget -O appimage-builder-x86_64.AppImage https://github.com/AppImageCrafters/appimage-builder/releases/download/v1.1.0/appimage-builder-1.1.0-x86_64.AppImage
+          chmod +x appimage-builder-x86_64.AppImage
+          sudo mv appimage-builder-x86_64.AppImage /usr/local/bin/appimage-builder
+          popd
+          # run appimage-builder
+          pushd appimage
+          sudo appimage-builder --skip-tests
+
+      - name: Publish appimage package
+        if: ${{ matrix.job.extra-build-features == 'appimage' }}
+        uses: softprops/action-gh-release@v1
+        with:
+          prerelease: true
+          tag_name: ${{ env.TAG_NAME }}
+          files: |
+            ./appimage/rustdesk-${{ env.VERSION }}-*.AppImage
+
       - name: Publish fedora28/centos8 package
         if: ${{ matrix.job.extra-build-features == '' }}
         uses: softprops/action-gh-release@v1
diff --git a/appimage/AppImageBuilder.yml b/appimage/AppImageBuilder.yml
new file mode 100644
index 000000000..ae95fd2ce
--- /dev/null
+++ b/appimage/AppImageBuilder.yml
@@ -0,0 +1,87 @@
+# appimage-builder recipe see https://appimage-builder.readthedocs.io for details
+version: 1
+script:
+ - rm -rf ./AppDir || true
+ - bsdtar -zxvf ../rustdesk-1.2.0.deb
+ - tar -xvf ./data.tar.xz
+ - mkdir ./AppDir
+ - mv ./usr ./AppDir/usr
+ # 32x32 icon
+ - for i in {32,64,128}; do mkdir -p ./AppDir/usr/share/icons/hicolor/$i\x$i/apps/; cp ../res/$i\x$i.png ./AppDir/usr/share/icons/hicolor/$i\x$i/apps/rustdesk.png; done
+ # desktop file
+ # - sed -i "s/Icon=\/usr\/share\/rustdesk\/files\/rustdesk.png/Icon=rustdesk/g" ./AppDir/usr/share/applications/rustdesk.desktop
+ - rm -rf ./AppDir/usr/share/applications
+AppDir:
+  path: ./AppDir
+  app_info:
+    id: rustdesk
+    name: rustdesk
+    icon: rustdesk
+    version: 1.2.0
+    exec: usr/lib/rustdesk/rustdesk
+    exec_args: $@
+  apt:
+    arch:
+    - amd64
+    allow_unauthenticated: true
+    sources:
+    - sourceline: deb http://archive.ubuntu.com/ubuntu/ bionic main restricted
+    - sourceline: deb http://archive.ubuntu.com/ubuntu/ bionic-updates main restricted
+    - sourceline: deb http://archive.ubuntu.com/ubuntu/ bionic universe
+    - sourceline: deb http://archive.ubuntu.com/ubuntu/ bionic-updates universe
+    - sourceline: deb http://archive.ubuntu.com/ubuntu/ bionic multiverse
+    - sourceline: deb http://archive.ubuntu.com/ubuntu/ bionic-updates multiverse
+    - sourceline: deb http://archive.ubuntu.com/ubuntu/ bionic-backports main restricted
+        universe multiverse
+    - sourceline: deb http://ppa.launchpad.net/pipewire-debian/pipewire-upstream/ubuntu
+        bionic main
+    include:
+    - libc6:amd64
+    - libgtk-3-0
+    - libxcb-randr0
+    - libxdo3
+    - libxfixes3
+    - libxcb-shape0
+    - libxcb-xfixes0
+    - libasound2
+    - libsystemd0
+    - curl
+    - libva-drm2
+    - libva-x11-2
+    - libvdpau1
+    - libgstreamer-plugins-base1.0-0
+    exclude:
+    - humanity-icon-theme
+    - hicolor-icon-theme
+    - adwaita-icon-theme
+    - ubuntu-mono
+  files:
+    include: []
+    exclude:
+    - usr/share/man
+    - usr/share/doc/*/README.*
+    - usr/share/doc/*/changelog.*
+    - usr/share/doc/*/NEWS.*
+    - usr/share/doc/*/TODO.*
+  runtime:
+    env:
+      GIO_MODULE_DIR: $APPDIR/usr/lib/x86_64-linux-gnu/gio/modules/
+  test:
+    fedora-30:
+      image: appimagecrafters/tests-env:fedora-30
+      command: ./AppRun
+    debian-stable:
+      image: appimagecrafters/tests-env:debian-stable
+      command: ./AppRun
+    archlinux-latest:
+      image: appimagecrafters/tests-env:archlinux-latest
+      command: ./AppRun
+    centos-7:
+      image: appimagecrafters/tests-env:centos-7
+      command: ./AppRun
+    ubuntu-xenial:
+      image: appimagecrafters/tests-env:ubuntu-xenial
+      command: ./AppRun
+AppImage:
+  arch: x86_64
+  update-information: guess
diff --git a/build.py b/build.py
index 75d6fcd89..6b107ff4b 100755
--- a/build.py
+++ b/build.py
@@ -99,6 +99,11 @@ def make_parser():
         action='store_true',
         help='Build rustdesk libs with the flatpak feature enabled'
     )
+    parser.add_argument(
+        '--appimage',
+        action='store_true',
+        help='Build rustdesk libs with the appimage feature enabled'
+    )
     parser.add_argument(
         '--skip-cargo',
         action='store_true',
@@ -236,6 +241,8 @@ def get_features(args):
         features.append('flutter')
     if args.flatpak:
         features.append('flatpak')
+    if args.appimage:
+        features.append('appimage')
     print("features:", features)
     return features
 
diff --git a/flutter/linux/my_application.cc b/flutter/linux/my_application.cc
index 215c6f0ee..21e25fa28 100644
--- a/flutter/linux/my_application.cc
+++ b/flutter/linux/my_application.cc
@@ -23,7 +23,15 @@ static void my_application_activate(GApplication* application) {
       GTK_WINDOW(gtk_application_window_new(GTK_APPLICATION(application)));
   // we have custom window frame
   gtk_window_set_decorated(window, FALSE);
-
+  // try setting icon for rustdesk, which uses the system cache 
+  GtkIconTheme* theme = gtk_icon_theme_get_default();
+  gint icons[4] = {256, 128, 64, 32};
+  for (int i = 0; i < 4; i++) {
+    GdkPixbuf* icon = gtk_icon_theme_load_icon(theme, "rustdesk", icons[i], GTK_ICON_LOOKUP_NO_SVG, NULL);
+    if (icon != nullptr) {
+      gtk_window_set_icon(window, icon);
+    }
+  }
   // Use a header bar when running in GNOME as this is the common style used
   // by applications and is the setup most users will be using (e.g. Ubuntu
   // desktop).
diff --git a/flutter/pubspec.yaml b/flutter/pubspec.yaml
index 4826f6198..705f4650c 100644
--- a/flutter/pubspec.yaml
+++ b/flutter/pubspec.yaml
@@ -63,7 +63,7 @@ dependencies:
     desktop_multi_window:
         git:
             url: https://github.com/Kingtous/rustdesk_desktop_multi_window
-            ref: e6d30bde98bd0f4ff50a130e5b1068138307bd03
+            ref: 057e6eb1bc7dcbcf9dafd1384274a611e4fe7124
     freezed_annotation: ^2.0.3
     flutter_custom_cursor: ^0.0.2
     window_size:
diff --git a/res/64x64.png b/res/64x64.png
new file mode 100644
index 000000000..d93638e6e
Binary files /dev/null and b/res/64x64.png differ