diff --git a/utils/osgi/src/main/java/org/onlab/osgi/ServiceDirectory.java b/utils/osgi/src/main/java/org/onlab/osgi/ServiceDirectory.java
new file mode 100644
index 0000000..ee33fa2
--- /dev/null
+++ b/utils/osgi/src/main/java/org/onlab/osgi/ServiceDirectory.java
@@ -0,0 +1,18 @@
+package org.onlab.osgi;
+
+/**
+ * Simple abstraction of a service directory where service implementations can
+ * be found by the class name of the interfaces they provide.
+ */
+public interface ServiceDirectory {
+
+    /**
+     * Returns implementation of the specified service class.
+     * @param serviceClass service class
+     * @param <T> type of service
+     * @return implementation class
+     * @throws ServiceNotFoundException if no implementation found
+     */
+    <T> T get(Class<T> serviceClass);
+
+}