diff --git a/incubator/protobuf/services/nb/src/main/java/org/onosproject/incubator/protobuf/services/nb/GrpcNbApplicationService.java b/incubator/protobuf/services/nb/src/main/java/org/onosproject/incubator/protobuf/services/nb/GrpcNbApplicationService.java
new file mode 100644
index 0000000..9bbd813
--- /dev/null
+++ b/incubator/protobuf/services/nb/src/main/java/org/onosproject/incubator/protobuf/services/nb/GrpcNbApplicationService.java
@@ -0,0 +1,127 @@
+/*
+ * Copyright 2017-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.incubator.protobuf.services.nb;
+
+import com.google.common.annotations.Beta;
+import io.grpc.stub.StreamObserver;
+import org.apache.felix.scr.annotations.Activate;
+import org.apache.felix.scr.annotations.Component;
+import org.apache.felix.scr.annotations.Deactivate;
+import org.apache.felix.scr.annotations.Reference;
+import org.apache.felix.scr.annotations.ReferenceCardinality;
+import org.onosproject.app.ApplicationService;
+import org.onosproject.app.ApplicationState;
+import org.onosproject.core.Application;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.grpc.nb.app.ApplicationServiceGrpc.ApplicationServiceImplBase;
+import org.onosproject.grpc.nb.app.ApplicationServiceNb;
+import org.onosproject.grpc.nb.app.ApplicationServiceNb.getApplicationReply;
+import org.onosproject.grpc.nb.app.ApplicationServiceNb.getApplicationsReply;
+import org.onosproject.grpc.nb.app.ApplicationServiceNb.getIdReply;
+import org.onosproject.grpc.nb.app.ApplicationServiceNb.getPermissionsReply;
+import org.onosproject.grpc.nb.app.ApplicationServiceNb.getStateReply;
+import org.onosproject.incubator.protobuf.models.core.ApplicationEnumsProtoTranslator;
+import org.onosproject.incubator.protobuf.models.core.ApplicationIdProtoTranslator;
+import org.onosproject.incubator.protobuf.models.core.ApplicationProtoTranslator;
+import org.onosproject.incubator.protobuf.models.security.PermissionProtoTranslator;
+
+/**
+ * A server that provides access to the methods exposed by {@link ApplicationService}.
+ */
+
+@Beta
+@Component(immediate = true)
+public class GrpcNbApplicationService {
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected ApplicationService applicationService;
+
+    @Activate
+    public void activate() {
+        //TODO this should contact the registry service and register an instance
+        // of this service.
+    }
+
+    @Deactivate
+    public void deactivate() {
+    }
+
+    private class ApplicationServiceNbServerInternal extends ApplicationServiceImplBase {
+
+        public ApplicationServiceNbServerInternal() {
+            super();
+        }
+
+        @Override
+        public void getApplications(ApplicationServiceNb.getApplicationsRequest request,
+                                    StreamObserver<getApplicationsReply> responseObserver) {
+            getApplicationsReply.Builder replyBuilder = getApplicationsReply.newBuilder();
+
+            applicationService.getApplications().forEach(a ->
+                    replyBuilder.addApplication(ApplicationProtoTranslator.translate(a)));
+            responseObserver.onNext(replyBuilder.build());
+            responseObserver.onCompleted();
+        }
+
+        @Override
+        public void getId(ApplicationServiceNb.getIdRequest request,
+                          StreamObserver<getIdReply> responseObserver) {
+            ApplicationId appId = applicationService.getId(request.getName());
+
+            responseObserver.onNext(getIdReply.newBuilder()
+                    .setApplicationId(ApplicationIdProtoTranslator.translate(appId)).build());
+            responseObserver.onCompleted();
+        }
+
+        @Override
+        public void getApplication(ApplicationServiceNb.getApplicationRequest request,
+                                   StreamObserver<getApplicationReply> responseObserver) {
+
+            Application application = applicationService.getApplication(
+                    ApplicationIdProtoTranslator.translate(request.getApplicationId()));
+
+            responseObserver.onNext(getApplicationReply.newBuilder()
+                    .setApplication(ApplicationProtoTranslator
+                            .translate(application)).build());
+            responseObserver.onCompleted();
+        }
+
+        @Override
+        public void getState(ApplicationServiceNb.getStateRequest request,
+                             StreamObserver<getStateReply> responseObserver) {
+            ApplicationState state = applicationService.getState(
+                    ApplicationIdProtoTranslator.translate(request.getApplicationId()));
+
+            responseObserver.onNext(getStateReply
+                    .newBuilder().setState(ApplicationEnumsProtoTranslator
+                            .translate(state)).build());
+            responseObserver.onCompleted();
+        }
+
+        @Override
+        public void getPermissions(ApplicationServiceNb.getPermissionsRequest request,
+                                   StreamObserver<getPermissionsReply> responseObserver) {
+            getPermissionsReply.Builder replyBuilder = getPermissionsReply.newBuilder();
+
+            applicationService.getPermissions(ApplicationIdProtoTranslator
+                    .translate(request.getApplicationId()))
+                    .forEach(p -> replyBuilder.addPermission(
+                            PermissionProtoTranslator.translate(p)));
+            responseObserver.onNext(replyBuilder.build());
+            responseObserver.onCompleted();
+        }
+    }
+}