diff --git a/src/lime/app/Promises.hx b/src/lime/app/Promises.hx
new file mode 100644
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+++ b/src/lime/app/Promises.hx
@@ -0,0 +1,109 @@
+package lime.app;
+
+import lime.app.Promise;
+import lime.app.Future;
+
+/**
+ * A set of static utility functions for working with Promises.
+ * This includes functions which resolve groups of Futures.
+ */
+class Promises {
+  /**
+   * Creates a promise which fulfills when all the input promises resolve successfully,
+   * with an array of the result values.
+   * Rejects when any of the input promises reject, with the first rejection reason.
+   * @param futures A list of Futures to resolve.
+   * @return A Future for a list of result values.
+   */
+  public static function all<T>(futures:Array<Future<T>>):Future<Array<T>> {
+    var promise:Promise<Array<T>> = new Promise<Array<T>>();
+    var results:Array<T> = [];
+
+    for (future in futures) {
+      future.onComplete(function(result) {
+        results.push(result);
+        if (results.length == futures.length) {
+          promise.complete(results);
+        }
+      });
+      future.onError(function(error) {
+        promise.error(error);
+      });
+    }
+
+    return promise.future;
+  }
+
+  /**
+   * Creates a promise which fulfills when all the input promises settle (whether success or failure).
+   * Returns an array of objects that describe the outcome of each promise.
+   * @param futures A list of Futures to resolve.
+   * @return A Future for a list of result values.
+   */
+  public static function allSettled<T>(futures:Array<Future<T>>):Future<Array<Future<T>>> {
+    var promise:Promise<Array<Future<T>>> = new Promise<Array<Future<T>>>();
+
+    var resolved:Int = 0;
+
+    for (future in futures) {
+      future.onComplete(function(value) {
+        resolved += 1;
+        if (resolved == futures.length) {
+          promise.complete(futures);
+        }
+      });
+      future.onError(function(error) {
+        resolved += 1;
+        if (resolved == futures.length) {
+          promise.complete(futures);
+        }
+      });
+    }
+
+    return promise.future;
+  }
+
+  /**
+   * Creates a promise which fulfills when any of the input promises resolve successfully.
+   * Returns the first fulfilled promise. If all promises reject, the promise will be rejected with the list of rejection reasons.
+   * @param futures A list of Futures to resolve.
+   * @return A Future for a result value.
+   */
+  public static function any<T>(futures:Array<Future<T>>):Future<T> {
+    var promise:Promise<T> = new Promise<T>();
+    var errors:Array<Dynamic> = [];
+
+    for (future in futures) {
+      future.onComplete(function(value) {
+        promise.complete(value);
+      });
+      future.onError(function(error) {
+        errors.push(error);
+        if (errors.length == futures.length) {
+          promise.error(errors);
+        }
+      });
+    }
+
+    return promise.future;
+  }
+
+  /**
+   * Creates a promise which fulfills when any of the input promises settle.
+   * Returns an object that describes the outcome of the first settled promise (whether success or failure).
+   * @param futures A list of Futures to resolve.
+   * @return A Future for a result value.
+   */
+  public static function race<T>(futures:Array<Future<T>>):Future<T> {
+    var promise:Promise<T> = new Promise<T>();
+    for (future in futures) {
+      future.onComplete(function(value) {
+        promise.complete(value);
+      });
+      future.onError(function(error) {
+        promise.error(error);
+      });
+    }
+    return promise.future;
+  }
+}