diff --git a/sync-all.sh b/sync-all.sh
new file mode 100755
index 0000000..e2f4a14
--- /dev/null
+++ b/sync-all.sh
@@ -0,0 +1,41 @@
+#!/bin/bash
+set -e
+
+subdirs_path=$(dirname -- "$(realpath -- "$0")")
+cd "$subdirs_path"
+
+declare -A repo_names=(
+    [c++utilities]=cpp-utilities
+    [qtutilities]=
+    [qtforkawesome]=
+    [syncthingtray]=
+    [tagparser]=
+    [tageditor]=
+    [passwordfile]=
+    [passwordmanager]=
+    [videodownloader]=
+    [reflective-rapidjson]=
+    [dbus-soundrecorder]=
+    [geocoordinatecalculator]=
+)
+
+# ensure a clone of all repositories exists
+for dir in "${!repo_names[@]}"; do
+    [[ -d ../$dir/.git ]] && continue
+    echo "==> Cloning $dir"
+    repo=${repo_names[$dir]:-$dir}
+    git -C .. clone "git@github.com:Martchus/$repo.git" "$dir"
+done
+
+# ensure all repositories are up-to-date
+for dir in ../* ; do
+    [[ -d $dir/.git ]] || continue
+    echo "==> Updating $dir"
+    git -C "$dir" remote update
+    branch_name=$(git -C "$dir" symbolic-ref -q HEAD)
+    branch_name=${branch_name##refs/heads/}
+    branch_name=${branch_name:-DETACHED}
+    if output=$(git -C "$dir" status --porcelain) && [[ -z $output ]] && [[ $branch_name == DETACHED || $branch_name == master ]]; then
+        git -C "$dir" reset --hard origin/master
+    fi
+done