diff --git a/core/api/src/main/java/org/onosproject/app/ApplicationAdminService.java b/core/api/src/main/java/org/onosproject/app/ApplicationAdminService.java
new file mode 100644
index 0000000..18babd5
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/app/ApplicationAdminService.java
@@ -0,0 +1,68 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.app;
+
+import org.onosproject.core.Application;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.core.Permission;
+
+import java.io.InputStream;
+import java.util.Set;
+
+/**
+ * Service for managing network control applications.
+ */
+public interface ApplicationAdminService extends ApplicationService {
+
+    /**
+     * Installs the application contained in the specified application archive
+     * input stream.
+     *
+     * @param appDescStream application descriptor input stream
+     * @return installed application descriptor
+     * @throws org.onosproject.app.ApplicationException if unable to read the app archive stream
+     */
+    Application install(InputStream appDescStream);
+
+    /**
+     * Uninstalls the specified application.
+     *
+     * @param appId application identifier
+     */
+    void uninstall(ApplicationId appId);
+
+    /**
+     * Activates the specified application.
+     *
+     * @param appId application identifier
+     */
+    void activate(ApplicationId appId);
+
+    /**
+     * Deactivates the specified application.
+     *
+     * @param appId application identifier
+     */
+    void deactivate(ApplicationId appId);
+
+    /**
+     * Updates the permissions granted to the applications.
+     *
+     * @param appId       application identifier
+     * @param permissions set of granted permissions
+     */
+    void setPermissions(ApplicationId appId, Set<Permission> permissions);
+}
diff --git a/core/api/src/main/java/org/onosproject/app/ApplicationDescription.java b/core/api/src/main/java/org/onosproject/app/ApplicationDescription.java
new file mode 100644
index 0000000..ec7958d
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/app/ApplicationDescription.java
@@ -0,0 +1,80 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.app;
+
+import org.onosproject.core.Permission;
+import org.onosproject.core.Version;
+
+import java.net.URI;
+import java.util.Optional;
+import java.util.Set;
+
+/**
+ * Description of a network control/management application.
+ */
+public interface ApplicationDescription {
+
+    /**
+     * Returns the application name id.
+     *
+     * @return application identifier
+     */
+    String name();
+
+    /**
+     * Returns the application version.
+     *
+     * @return application version
+     */
+    Version version();
+
+    /**
+     * Returns description of the application.
+     *
+     * @return application description text
+     */
+    String description();
+
+    /**
+     * Returns the name of the application origin, group or company.
+     *
+     * @return application origin
+     */
+    String origin();
+
+    /**
+     * Returns the permissions requested by the application.
+     *
+     * @return requested permissions
+     */
+    Set<Permission> permissions();
+
+    /**
+     * Returns the feature repository URI. Null value signifies that the
+     * application did not provide its own features repository.
+     *
+     * @return optional feature repo URL
+     */
+    Optional<URI> featuresRepo();
+
+    /**
+     * Returns the set of features comprising the application. At least one
+     * feature must be given.
+     *
+     * @return application features
+     */
+    Set<String> features();
+}
diff --git a/core/api/src/main/java/org/onosproject/app/ApplicationEvent.java b/core/api/src/main/java/org/onosproject/app/ApplicationEvent.java
new file mode 100644
index 0000000..5bf1323
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/app/ApplicationEvent.java
@@ -0,0 +1,75 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.app;
+
+import org.onosproject.core.Application;
+import org.onosproject.event.AbstractEvent;
+
+/**
+ * Describes application lifecycle event.
+ */
+public class ApplicationEvent extends AbstractEvent<ApplicationEvent.Type, Application> {
+
+    public enum Type {
+        /**
+         * Signifies that an application has been installed.
+         */
+        APP_INSTALLED,
+
+        /**
+         * Signifies that an application has been activated.
+         */
+        APP_ACTIVATED,
+
+        /**
+         * Signifies that an application has been deactivated.
+         */
+        APP_DEACTIVATED,
+
+        /**
+         * Signifies that an application has been uninstalled.
+         */
+        APP_UNINSTALLED,
+
+        /**
+         * Signifies that application granted permissions have changed.
+         */
+        APP_PERMISSIONS_CHANGED
+    }
+
+    /**
+     * Creates an event of a given type and for the specified app and the
+     * current time.
+     *
+     * @param type app event type
+     * @param app  event app subject
+     */
+    public ApplicationEvent(Type type, Application app) {
+        super(type, app);
+    }
+
+    /**
+     * Creates an event of a given type and for the specified app and time.
+     *
+     * @param type app event type
+     * @param app  event app subject
+     * @param time occurrence time
+     */
+    public ApplicationEvent(Type type, Application app, long time) {
+        super(type, app, time);
+    }
+
+}
diff --git a/core/api/src/main/java/org/onosproject/app/ApplicationException.java b/core/api/src/main/java/org/onosproject/app/ApplicationException.java
new file mode 100644
index 0000000..2888c70
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/app/ApplicationException.java
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.app;
+
+/**
+ * Represents class of errors related to application management.
+ */
+public class ApplicationException extends RuntimeException {
+
+    private static final long serialVersionUID = -2287403908433720122L;
+
+    /**
+     * Constructs an exception with no message and no underlying cause.
+     */
+    public ApplicationException() {
+    }
+
+    /**
+     * Constructs an exception with the specified message.
+     *
+     * @param message the message describing the specific nature of the error
+     */
+    public ApplicationException(String message) {
+        super(message);
+    }
+
+    /**
+     * Constructs an exception with the specified message and the underlying cause.
+     *
+     * @param message the message describing the specific nature of the error
+     * @param cause the underlying cause of this error
+     */
+    public ApplicationException(String message, Throwable cause) {
+        super(message, cause);
+    }
+}
diff --git a/core/api/src/main/java/org/onosproject/app/ApplicationListener.java b/core/api/src/main/java/org/onosproject/app/ApplicationListener.java
new file mode 100644
index 0000000..7a68057
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/app/ApplicationListener.java
@@ -0,0 +1,24 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.app;
+
+import org.onosproject.event.EventListener;
+
+/**
+ * Entity capable of receiving application related events.
+ */
+public interface ApplicationListener extends EventListener<ApplicationEvent> {
+}
diff --git a/core/api/src/main/java/org/onosproject/app/ApplicationService.java b/core/api/src/main/java/org/onosproject/app/ApplicationService.java
new file mode 100644
index 0000000..1aaf092
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/app/ApplicationService.java
@@ -0,0 +1,82 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.app;
+
+import org.onosproject.core.Application;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.core.Permission;
+
+import java.util.Set;
+
+/**
+ * Service for inspecting inventory of network control applications.
+ */
+public interface ApplicationService {
+
+    /**
+     * Returns the set of all installed applications.
+     *
+     * @return set of installed apps
+     */
+    Set<Application> getApplications();
+
+    /**
+     * Returns the registered id of the application with the given name.
+     *
+     * @param name application name
+     * @return registered application id
+     */
+    ApplicationId getId(String name);
+
+    /**
+     * Returns the application with the supplied application identifier.
+     *
+     * @param appId application identifier
+     * @return application descriptor
+     */
+    Application getApplication(ApplicationId appId);
+
+    /**
+     * Return the application state.
+     *
+     * @param appId application identifier
+     * @return application state
+     */
+    ApplicationState getState(ApplicationId appId);
+
+    /**
+     * Returns the permissions currently granted to the applications.
+     *
+     * @param appId application identifier
+     * @return set of granted permissions
+     */
+    Set<Permission> getPermissions(ApplicationId appId);
+
+    /**
+     * Adds the given listener for application lifecycle events.
+     *
+     * @param listener listener to be added
+     */
+    void addListener(ApplicationListener listener);
+
+    /**
+     * Removes the specified listener for application lifecycle events.
+     *
+     * @param listener listener to be removed
+     */
+    void removeListener(ApplicationListener listener);
+
+}
diff --git a/core/api/src/main/java/org/onosproject/app/ApplicationState.java b/core/api/src/main/java/org/onosproject/app/ApplicationState.java
new file mode 100644
index 0000000..c480a0c
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/app/ApplicationState.java
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.app;
+
+/**
+ * Representation of an application state.
+ */
+public enum ApplicationState {
+
+    /**
+     * Indicates that application has been installed, but is not running.
+     */
+    INSTALLED,
+
+    /**
+     * Indicates that application is active.
+     */
+    ACTIVE
+
+}
diff --git a/core/api/src/main/java/org/onosproject/app/ApplicationStore.java b/core/api/src/main/java/org/onosproject/app/ApplicationStore.java
new file mode 100644
index 0000000..d20adb5
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/app/ApplicationStore.java
@@ -0,0 +1,108 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.app;
+
+import org.onosproject.core.Application;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.core.Permission;
+import org.onosproject.store.Store;
+
+import java.io.InputStream;
+import java.util.Set;
+
+/**
+ * Service for managing network control applications.
+ */
+public interface ApplicationStore extends Store<ApplicationEvent, ApplicationStoreDelegate> {
+
+    /**
+     * Returns the set of all installed applications.
+     *
+     * @return set of installed apps
+     */
+    Set<Application> getApplications();
+
+    /**
+     * Returns the registered id of the application with the given name.
+     *
+     * @param name application name
+     * @return registered application id
+     */
+    ApplicationId getId(String name);
+
+    /**
+     * Returns the application with the supplied application identifier.
+     *
+     * @param appId application identifier
+     * @return application descriptor
+     */
+    Application getApplication(ApplicationId appId);
+
+    /**
+     * Returns the current application state.
+     *
+     * @param appId application identifier
+     * @return application state
+     */
+    ApplicationState getState(ApplicationId appId);
+
+    /**
+     * Creates the application from the specified application descriptor
+     * input stream.
+     *
+     * @param appDescStream application archive input stream
+     * @return application descriptor
+     */
+    Application create(InputStream appDescStream);
+
+    /**
+     * Removes the specified application.
+     *
+     * @param appId application identifier
+     */
+    void remove(ApplicationId appId);
+
+    /**
+     * Mark the application as actived.
+     *
+     * @param appId application identifier
+     */
+    void activate(ApplicationId appId);
+
+    /**
+     * Mark the application as deactivated.
+     *
+     * @param appId application identifier
+     */
+    void deactivate(ApplicationId appId);
+
+    /**
+     * Returns the permissions granted to the applications.
+     *
+     * @param appId application identifier
+     * @return set of granted permissions
+     */
+    Set<Permission> getPermissions(ApplicationId appId);
+
+    /**
+     * Updates the permissions granted to the applications.
+     *
+     * @param appId       application identifier
+     * @param permissions set of granted permissions
+     */
+    void setPermissions(ApplicationId appId, Set<Permission> permissions);
+
+}
diff --git a/core/api/src/main/java/org/onosproject/app/ApplicationStoreDelegate.java b/core/api/src/main/java/org/onosproject/app/ApplicationStoreDelegate.java
new file mode 100644
index 0000000..f339e68
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/app/ApplicationStoreDelegate.java
@@ -0,0 +1,24 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.app;
+
+import org.onosproject.store.StoreDelegate;
+
+/**
+ * Application store delegate abstraction.
+ */
+public interface ApplicationStoreDelegate extends StoreDelegate<ApplicationEvent> {
+}
diff --git a/core/api/src/main/java/org/onosproject/app/DefaultApplicationDescription.java b/core/api/src/main/java/org/onosproject/app/DefaultApplicationDescription.java
new file mode 100644
index 0000000..9c53542
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/app/DefaultApplicationDescription.java
@@ -0,0 +1,114 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.app;
+
+import org.onosproject.core.Permission;
+import org.onosproject.core.Version;
+
+import java.net.URI;
+import java.util.Optional;
+import java.util.Set;
+
+import static com.google.common.base.MoreObjects.toStringHelper;
+import static com.google.common.base.Preconditions.checkArgument;
+import static com.google.common.base.Preconditions.checkNotNull;
+
+/**
+ * Default implementation of network control/management application descriptor.
+ */
+public class DefaultApplicationDescription implements ApplicationDescription {
+
+    private final String name;
+    private final Version version;
+    private final String description;
+    private final String origin;
+    private final Set<Permission> permissions;
+    private final Optional<URI> featuresRepo;
+    private final Set<String> features;
+
+    /**
+     * Creates a new application descriptor using the supplied data.
+     *
+     * @param name         application name
+     * @param version      application version
+     * @param description  application description
+     * @param origin       origin company
+     * @param permissions  requested permissions
+     * @param featuresRepo optional features repo URI
+     * @param features     application features
+     */
+    public DefaultApplicationDescription(String name, Version version,
+                                         String description, String origin,
+                                         Set<Permission> permissions,
+                                         URI featuresRepo, Set<String> features) {
+        this.name = checkNotNull(name, "Name cannot be null");
+        this.version = checkNotNull(version, "Version cannot be null");
+        this.description = checkNotNull(description, "Description cannot be null");
+        this.origin = checkNotNull(origin, "Origin cannot be null");
+        this.permissions = checkNotNull(permissions, "Permissions cannot be null");
+        this.featuresRepo = Optional.ofNullable(featuresRepo);
+        this.features = checkNotNull(features, "Features cannot be null");
+        checkArgument(!features.isEmpty(), "There must be at least one feature");
+    }
+
+    @Override
+    public String name() {
+        return name;
+    }
+
+    @Override
+    public Version version() {
+        return version;
+    }
+
+    @Override
+    public String description() {
+        return description;
+    }
+
+    @Override
+    public String origin() {
+        return origin;
+    }
+
+    @Override
+    public Set<Permission> permissions() {
+        return permissions;
+    }
+
+    @Override
+    public Optional<URI> featuresRepo() {
+        return featuresRepo;
+    }
+
+    @Override
+    public Set<String> features() {
+        return features;
+    }
+
+    @Override
+    public String toString() {
+        return toStringHelper(this)
+                .add("name", name)
+                .add("version", version)
+                .add("description", description)
+                .add("origin", origin)
+                .add("permissions", permissions)
+                .add("featuresRepo", featuresRepo)
+                .add("features", features)
+                .toString();
+    }
+}
diff --git a/core/api/src/main/java/org/onosproject/app/package-info.java b/core/api/src/main/java/org/onosproject/app/package-info.java
new file mode 100644
index 0000000..f8e5465
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/app/package-info.java
@@ -0,0 +1,20 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.
+ */
+
+/**
+ * Set of abstractions for managing network control applications.
+ */
+package org.onosproject.app;
\ No newline at end of file
diff --git a/core/api/src/main/java/org/onosproject/core/Application.java b/core/api/src/main/java/org/onosproject/core/Application.java
new file mode 100644
index 0000000..d876a67
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/core/Application.java
@@ -0,0 +1,77 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.core;
+
+import java.net.URI;
+import java.util.Optional;
+import java.util.Set;
+
+/**
+ * Abstraction of a network control/management application.
+ */
+public interface Application {
+
+    /**
+     * Returns the application name id.
+     *
+     * @return application identifier
+     */
+    ApplicationId id();
+
+    /**
+     * Returns the application version.
+     *
+     * @return application version
+     */
+    Version version();
+
+    /**
+     * Returns description of the application.
+     *
+     * @return application description text
+     */
+    String description();
+
+    /**
+     * Returns the name of the application origin, group or company.
+     *
+     * @return application origin
+     */
+    String origin();
+
+    /**
+     * Returns the permissions requested by the application.
+     *
+     * @return requested permissions
+     */
+    Set<Permission> permissions();
+
+    /**
+     * Returns the feature repository URI. Null value signifies that the
+     * application did not provide its own features repository.
+     *
+     * @return optional feature repo URL
+     */
+    Optional<URI> featuresRepo();
+
+    /**
+     * Returns the set of features comprising the application. At least one
+     * feature must be given.
+     *
+     * @return application features
+     */
+    Set<String> features();
+}
diff --git a/core/api/src/main/java/org/onosproject/core/ApplicationIdStore.java b/core/api/src/main/java/org/onosproject/core/ApplicationIdStore.java
index cef3f15..2236fc5 100644
--- a/core/api/src/main/java/org/onosproject/core/ApplicationIdStore.java
+++ b/core/api/src/main/java/org/onosproject/core/ApplicationIdStore.java
@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 package org.onosproject.core;
+// FIXME: Move to org.onosproject.app package
 
 import java.util.Set;
 
@@ -31,12 +32,21 @@
 
     /**
      * Returns an existing application id from a given id.
+     *
      * @param id the short value of the id
-     * @return an application id
+     * @return an application id; null if no such app registered
      */
     ApplicationId getAppId(Short id);
 
     /**
+     * Returns registered application id from the given name.
+     *
+     * @param name application name
+     * @return an application id; null if no such app registered
+     */
+    ApplicationId getAppId(String name);
+
+    /**
      * Registers a new application by its name, which is expected
      * to follow the reverse DNS convention, e.g.
      * {@code org.flying.circus.app}
diff --git a/core/api/src/main/java/org/onosproject/core/DefaultApplication.java b/core/api/src/main/java/org/onosproject/core/DefaultApplication.java
new file mode 100644
index 0000000..4da85a5
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/core/DefaultApplication.java
@@ -0,0 +1,136 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.core;
+
+import java.net.URI;
+import java.util.Objects;
+import java.util.Optional;
+import java.util.Set;
+
+import static com.google.common.base.MoreObjects.toStringHelper;
+import static com.google.common.base.Preconditions.checkArgument;
+import static com.google.common.base.Preconditions.checkNotNull;
+
+/**
+ * Default implementation of network control/management application descriptor.
+ */
+public class DefaultApplication implements Application {
+
+    private final ApplicationId appId;
+    private final Version version;
+    private final String description;
+    private final String origin;
+    private final Set<Permission> permissions;
+    private final Optional<URI> featuresRepo;
+    private final Set<String> features;
+
+    /**
+     * Creates a new application descriptor using the supplied data.
+     *
+     * @param appId        application identifier
+     * @param version      application version
+     * @param description  application description
+     * @param origin       origin company
+     * @param permissions  requested permissions
+     * @param featuresRepo optional features repo URI
+     * @param features     application features
+     */
+    public DefaultApplication(ApplicationId appId, Version version,
+                              String description, String origin,
+                              Set<Permission> permissions,
+                              Optional<URI> featuresRepo, Set<String> features) {
+        this.appId = checkNotNull(appId, "ID cannot be null");
+        this.version = checkNotNull(version, "Version cannot be null");
+        this.description = checkNotNull(description, "Description cannot be null");
+        this.origin = checkNotNull(origin, "Origin cannot be null");
+        this.permissions = checkNotNull(permissions, "Permissions cannot be null");
+        this.featuresRepo = checkNotNull(featuresRepo, "Features repo cannot be null");
+        this.features = checkNotNull(features, "Features cannot be null");
+        checkArgument(!features.isEmpty(), "There must be at least one feature");
+    }
+
+    @Override
+    public ApplicationId id() {
+        return appId;
+    }
+
+    @Override
+    public Version version() {
+        return version;
+    }
+
+    @Override
+    public String description() {
+        return description;
+    }
+
+    @Override
+    public String origin() {
+        return origin;
+    }
+
+    @Override
+    public Set<Permission> permissions() {
+        return permissions;
+    }
+
+    @Override
+    public Optional<URI> featuresRepo() {
+        return featuresRepo;
+    }
+
+    @Override
+    public Set<String> features() {
+        return features;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(appId, version, description, origin, permissions,
+                            featuresRepo, features);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj == null || getClass() != obj.getClass()) {
+            return false;
+        }
+        final DefaultApplication other = (DefaultApplication) obj;
+        return Objects.equals(this.appId, other.appId) &&
+                Objects.equals(this.version, other.version) &&
+                Objects.equals(this.description, other.description) &&
+                Objects.equals(this.origin, other.origin) &&
+                Objects.equals(this.permissions, other.permissions) &&
+                Objects.equals(this.featuresRepo, other.featuresRepo) &&
+                Objects.equals(this.features, other.features);
+    }
+
+    @Override
+    public String toString() {
+        return toStringHelper(this)
+                .add("appId", appId)
+                .add("version", version)
+                .add("description", description)
+                .add("origin", origin)
+                .add("permissions", permissions)
+                .add("featuresRepo", featuresRepo)
+                .add("features", features)
+                .toString();
+    }
+}
diff --git a/core/api/src/main/java/org/onosproject/core/DefaultApplicationId.java b/core/api/src/main/java/org/onosproject/core/DefaultApplicationId.java
index e6f448e..3a07b2b 100644
--- a/core/api/src/main/java/org/onosproject/core/DefaultApplicationId.java
+++ b/core/api/src/main/java/org/onosproject/core/DefaultApplicationId.java
@@ -18,6 +18,7 @@
 import java.util.Objects;
 
 import static com.google.common.base.MoreObjects.toStringHelper;
+import static com.google.common.base.Preconditions.checkArgument;
 
 /**
  * Application identifier.
@@ -33,8 +34,9 @@
      * @param id   application identifier
      * @param name application name
      */
-    public DefaultApplicationId(Short id, String name) {
-        this.id = id;
+    public DefaultApplicationId(int id, String name) {
+        checkArgument(0 <= id && id <= Short.MAX_VALUE, "id is outside range");
+        this.id = (short) id;
         this.name = name;
     }
 
diff --git a/core/api/src/main/java/org/onosproject/core/Permission.java b/core/api/src/main/java/org/onosproject/core/Permission.java
new file mode 100644
index 0000000..d32d059
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/core/Permission.java
@@ -0,0 +1,23 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.core;
+
+/**
+ * Representation of an application permission.
+ */
+public interface Permission {
+    // TODO: to be fleshed out
+}