diff --git a/src/main/java/com/threerings/util/MultisetUtil.java b/src/main/java/com/threerings/util/MultisetUtil.java
new file mode 100644
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+++ b/src/main/java/com/threerings/util/MultisetUtil.java
@@ -0,0 +1,49 @@
+//
+// ooo-util - a place for OOO utilities
+// Copyright (C) 2011 Three Rings Design, Inc., All Rights Reserved
+// http://github.com/threerings/ooo-util/blob/master/LICENSE
+
+package com.threerings.util;
+
+import com.google.common.base.Function;
+import com.google.common.collect.ImmutableMultiset;
+import com.google.common.collect.Multiset;
+import com.google.common.collect.Ordering;
+import com.google.common.primitives.Ints;
+
+/**
+ * Convenience functions for working with Multisets.
+ */
+public class MultisetUtil
+{
+    /** An Ordering that compares Multiset.Entrys by count. */
+    public static final Ordering<Multiset.Entry<?>> ENTRY_COUNT_ORDERING =
+        new Ordering<Multiset.Entry<?>>() {
+            public int compare (Multiset.Entry<?> left, Multiset.Entry<?> right) {
+                return Ints.compare(left.getCount(), right.getCount());
+            }
+        };
+
+    /**
+     * Return a Function that will transform objects to their corresponding count in the
+     * specified Multiset.
+     */
+    public static Function<Object, Integer> countFunction (final Multiset<?> set)
+    {
+        return new Function<Object, Integer>() {
+            public Integer apply (Object o) {
+                return set.count(o);
+            }
+        };
+    }
+
+    /**
+     * Create an ImmutableMultiset with a single element with the specified count.
+     */
+    public static <T> ImmutableMultiset<T> singleton (T element, int count)
+    {
+        return ImmutableMultiset.<T>builder()
+            .addCopies(element, count)
+            .build();
+    }
+}