diff --git a/acl/acl-mongoDBBackend.d.ts b/acl/acl-mongoDBBackend.d.ts
new file mode 100644
index 00000000000000..48fe6f135516c8
--- /dev/null
+++ b/acl/acl-mongoDBBackend.d.ts
@@ -0,0 +1,22 @@
+// Type definitions for node_acl 0.4.7
+// Project: https://github.com/optimalbits/node_acl
+// Definitions by: Qubo <https://github.com/tkQubo>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+/// <reference path="acl.d.ts" />
+/// <reference path="../mongodb/mongodb.d.ts" />
+
+declare module "acl" {
+  import mongo = require('mongodb');
+
+  interface AclStatic {
+    mongodbBackend: MongodbBackendStatic;
+  }
+
+  interface MongodbBackend extends Backend<ErrCallback> { }
+  interface MongodbBackendStatic {
+    new(db: mongo.Db, prefix: string, useSingle: boolean): MongodbBackend;
+    new(db: mongo.Db, prefix: string): MongodbBackend;
+    new(db: mongo.Db): MongodbBackend;
+  }
+}
diff --git a/acl/acl-mongodbBackend-tests.ts b/acl/acl-mongodbBackend-tests.ts
new file mode 100644
index 00000000000000..ee3957de81395d
--- /dev/null
+++ b/acl/acl-mongodbBackend-tests.ts
@@ -0,0 +1,16 @@
+/// <reference path='acl-mongodbBackend.d.ts'/>
+
+// https://github.com/OptimalBits/node_acl/blob/master/Readme.md
+import Acl = require('acl');
+import mongodb = require('mongodb');
+
+var db: mongodb.Db;
+
+// Using the memory backend
+var acl = new Acl(new Acl.mongodbBackend(db, 'acl_', true));
+
+// guest is allowed to view blogs
+acl.allow('guest', 'blogs', 'view');
+
+// allow function accepts arrays as any parameter
+acl.allow('member', 'blogs', ['edit','view', 'delete']);
diff --git a/acl/acl-redisBackend-test.ts b/acl/acl-redisBackend-test.ts
new file mode 100644
index 00000000000000..4d1552b04edd94
--- /dev/null
+++ b/acl/acl-redisBackend-test.ts
@@ -0,0 +1,16 @@
+/// <reference path='./acl-redisBackend.d.ts'/>
+
+// https://github.com/OptimalBits/node_acl/blob/master/Readme.md
+import Acl = require('acl');
+import redis = require('redis');
+
+var client: redis.RedisClient;
+
+// Using the memory backend
+var acl = new Acl(new Acl.redisBackend(client, 'acl_'));
+
+// guest is allowed to view blogs
+acl.allow('guest', 'blogs', 'view');
+
+// allow function accepts arrays as any parameter
+acl.allow('member', 'blogs', ['edit','view', 'delete']);
diff --git a/acl/acl-redisBackend.d.ts b/acl/acl-redisBackend.d.ts
new file mode 100644
index 00000000000000..e199f8b81cbda8
--- /dev/null
+++ b/acl/acl-redisBackend.d.ts
@@ -0,0 +1,21 @@
+// Type definitions for node_acl 0.4.7
+// Project: https://github.com/optimalbits/node_acl
+// Definitions by: Qubo <https://github.com/tkQubo>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+/// <reference path="acl.d.ts" />
+/// <reference path='../redis/redis.d.ts'/>
+
+declare module "acl" {
+  import redis = require('redis');
+
+  interface AclStatic {
+    redisBackend: RedisBackendStatic;
+  }
+
+  interface RedisBackend extends Backend<redis.RedisClient> { }
+  interface RedisBackendStatic {
+    new(redis: redis.RedisClient, prefix: string): RedisBackend;
+    new(redis: redis.RedisClient): RedisBackend;
+  }
+}
diff --git a/acl/acl-tests.ts b/acl/acl-tests.ts
new file mode 100644
index 00000000000000..551ad9c1cd1e3a
--- /dev/null
+++ b/acl/acl-tests.ts
@@ -0,0 +1,65 @@
+/// <reference path='acl.d.ts'/>
+
+// Sample code from
+// https://github.com/OptimalBits/node_acl/blob/master/Readme.md
+import Acl = require('acl');
+
+var report = <T>(err: Error, value: T) => {
+  if (err) {
+    console.error(err);
+  }
+  console.info(value);
+};
+
+// Using the memory backend
+var acl = new Acl(new Acl.memoryBackend());
+
+// guest is allowed to view blogs
+acl.allow('guest', 'blogs', 'view');
+
+// allow function accepts arrays as any parameter
+acl.allow('member', 'blogs', ['edit','view', 'delete']);
+
+acl.addUserRoles('joed', 'guest');
+
+acl.addRoleParents('baz', ['foo','bar']);
+
+acl.allow('foo', ['blogs','forums','news'], ['view', 'delete']);
+
+acl.allow('admin', ['blogs','forums'], '*');
+
+acl.allow([
+    {
+        roles:['guest','special-member'],
+        allows:[
+            {resources:'blogs', permissions:'get'},
+            {resources:['forums','news'], permissions:['get','put','delete']}
+        ]
+    },
+    {
+        roles:['gold','silver'],
+        allows:[
+            {resources:'cash', permissions:['sell','exchange']},
+            {resources:['account','deposit'], permissions:['put','delete']}
+        ]
+    }
+]);
+
+acl.isAllowed('joed', 'blogs', 'view', (err, res) => {
+    if (res) {
+        console.log("User joed is allowed to view blogs");
+    }
+});
+
+acl.isAllowed('jsmith', 'blogs', ['edit','view','delete'])
+.then((result) => {
+  console.dir('jsmith is allowed blogs ' + result);
+  acl.addUserRoles('jsmith', 'member');
+}).then(() =>
+  acl.isAllowed('jsmith', 'blogs', ['edit','view','delete'])
+).then((result) =>
+  console.dir('jsmith is allowed blogs ' + result)
+).then(() => {
+  acl.allowedPermissions('james', ['blogs','forums'], report);
+  acl.allowedPermissions('jsmith', ['blogs','forums'], report);
+});
diff --git a/acl/acl.d.ts b/acl/acl.d.ts
new file mode 100644
index 00000000000000..f98bcb1ae65a4d
--- /dev/null
+++ b/acl/acl.d.ts
@@ -0,0 +1,117 @@
+// Type definitions for node_acl 0.4.7
+// Project: https://github.com/optimalbits/node_acl
+// Definitions by: Qubo <https://github.com/tkQubo>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+/// <reference path="../bluebird/bluebird.d.ts" />
+/// <reference path='../node/node.d.ts'/>
+
+declare module "acl" {
+  import http = require('http');
+  import Promise = require("bluebird");
+
+  type Func = ()=>any;
+  type Value = string|number;
+  type Values = Value|Value[];
+  type strings = string|string[];
+  type ErrCallback = (err: Error) => any;
+  type AnyCallback = (err: Error, obj: any) => any;
+  type AllowedCallback = (err: Error, allowed: boolean) => any;
+  type GetUserId = (req: http.ServerRequest, res: http.ServerResponse) => any;
+
+  interface AclStatic {
+    new (backend: Backend<any>, logger: Logger, options: Option): Acl;
+    new (backend: Backend<any>, logger: Logger): Acl;
+    new (backend: Backend<any>): Acl;
+    memoryBackend: MemoryBackendStatic;
+  }
+
+  interface Logger {
+    debug: (msg: string)=>any;
+  }
+
+  interface Acl {
+    addUserRoles: (userId: Value, roles: strings, cb?: ErrCallback) => Promise<void>;
+    removeUserRoles: (userId: Value, roles: strings, cb?: ErrCallback) => Promise<void>;
+    userRoles: (userId: Value, cb?: (err: Error, roles: string[])=>any) => Promise<string[]>;
+    roleUsers: (role: Value, cb?: (err: Error, users: Values)=>any) => Promise<any>;
+    hasRole: (userId: Value, role: string, cb?: (err: Error, isInRole: boolean)=>any) => Promise<boolean>;
+    addRoleParents: (role: string, parents: Values, cb?: ErrCallback) => Promise<void>;
+    removeRole: (role: string, cb?: ErrCallback) => Promise<void>;
+    removeResource: (resource: string, cb?: ErrCallback) => Promise<void>;
+    allow: {
+      (roles: Values, resources: strings, permissions: strings, cb?: ErrCallback): Promise<void>;
+      (aclSets: AclSet|AclSet[]): Promise<void>;
+    }
+    removeAllow: (role: string, resources: strings, permissions: strings, cb?: ErrCallback) => Promise<void>;
+    removePermissions: (role: string, resources: strings, permissions: strings, cb?: Function) => Promise<void>;
+    allowedPermissions: (userId: Value, resources: strings, cb?: AnyCallback) => Promise<void>;
+    isAllowed: (userId: Value, resources: strings, permissions: strings, cb?: AllowedCallback) => Promise<boolean>;
+    areAnyRolesAllowed: (roles: strings, resource: strings, permissions: strings, cb?: AllowedCallback) => Promise<any>;
+    whatResources: (roles: strings, permissions: strings, cb?: AnyCallback) => Promise<any>;
+    permittedResources: (roles: strings, permissions: strings, cb?: Function) => Promise<void>;
+    middleware: (numPathComponents: number, userId: Value|GetUserId, actions: strings) => Promise<any>;
+  }
+
+  interface Option {
+    buckets?: BucketsOption;
+  }
+
+  interface BucketsOption {
+    meta?: string;
+    parents?: string;
+    permissions?: string;
+    resources?: string;
+    roles?: string;
+    users?: string;
+  }
+
+  interface AclSet {
+    roles: strings;
+    allows: AclAllow[];
+  }
+
+  interface AclAllow {
+    resources: strings;
+    permissions: strings;
+  }
+
+  interface Backend<T> {
+    begin: () => T;
+    end: (transaction: T, cb?: Func) => void;
+    clean: (cb?: Func) => void;
+    get: (bucket: string, key: Value, cb?: Func) => void;
+    union: (bucket: string, keys: Value[], cb?: Func) => void;
+    add: (transaction: T, bucket: string, key: Value, values: Value|Value[]) => void;
+    del: (transaction: T, bucket: string, keys: Value[]) => void;
+    remove: (transaction: T, bucket: string, key: Value, values: Value|Value[]) => void;
+
+    endAsync: Function; //TODO: Give more specific function signature
+    getAsync: Function;
+    cleanAsync: Function;
+    unionAsync: Function;
+  }
+
+  interface MemoryBackend extends Backend<Func[]> { }
+  interface MemoryBackendStatic {
+    new(): MemoryBackend;
+  }
+
+  interface Contract {
+    (args: IArguments): Contract|NoOp;
+    debug: boolean;
+    fulfilled: boolean;
+    args: any[];
+    checkedParams: string[];
+    params: (...types: string[]) => Contract|NoOp;
+    end: () => void;
+  }
+
+  interface NoOp {
+    params: (...types: string[]) => NoOp;
+    end: () => void;
+  }
+
+  var _: AclStatic;
+  export = _;
+}