diff --git a/findup-sync/findup-sync-tests.ts b/findup-sync/findup-sync-tests.ts
new file mode 100644
index 000000000..f4aab395a
--- /dev/null
+++ b/findup-sync/findup-sync-tests.ts
@@ -0,0 +1,13 @@
+/// <reference path="./findup-sync.d.ts" />
+/// <reference path="../node/node.d.ts" />
+
+import findup = require('findup-sync');
+
+var str: string;
+
+str = findup('foo');
+str = findup(['foo', 'bar']);
+
+str = findup('foo', {
+	debug: true
+});
diff --git a/findup-sync/findup-sync.d.ts b/findup-sync/findup-sync.d.ts
new file mode 100644
index 000000000..a5bb5b49d
--- /dev/null
+++ b/findup-sync/findup-sync.d.ts
@@ -0,0 +1,15 @@
+// Type definitions for findup-sync v0.1.3
+// Project: https://github.com/cowboy/node-findup-sync
+// Definitions by: Bart van der Schoor <https://github.com/Bartvds>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+/// <reference path="../minimatch/minimatch.d.ts" />
+
+declare module 'findup-sync' {
+	import minimatch = require('minimatch');
+
+	function mod(pattern: string, opts?: minimatch.IOptions): string;
+	function mod(pattern: string[], opts?: minimatch.IOptions): string;
+
+	export = mod;
+}
diff --git a/from/from-tests.ts b/from/from-tests.ts
new file mode 100644
index 000000000..ce3a11d86
--- /dev/null
+++ b/from/from-tests.ts
@@ -0,0 +1,12 @@
+/// <reference path="./from.d.ts" />
+/// <reference path="../node/node.d.ts" />
+
+import from = require('from');
+
+var rs: NodeJS.ReadableStream;
+
+rs = from([]);
+rs = from(function (count: number, next: () => any) {
+	this.emit('end');
+});
+
diff --git a/from/from.d.ts b/from/from.d.ts
new file mode 100644
index 000000000..dadf1fb65
--- /dev/null
+++ b/from/from.d.ts
@@ -0,0 +1,21 @@
+// Type definitions for from v0.1.3
+// Project: https://github.com/dominictarr/from
+// Definitions by: Bart van der Schoor <https://github.com/Bartvds>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+/// <reference path="../node/node.d.ts" />
+
+declare module 'from' {
+
+	var mod: mod.From;
+
+	module mod {
+		interface From {
+			(getChunk: (count: number, next: () => any) => any): NodeJS.ReadableStream;
+			(chunks: any[]): NodeJS.ReadableStream;
+			emit(type: string, data: any): void;
+		}
+	}
+
+	export  = mod;
+}
diff --git a/readdir-stream/readdir-stream-tests.ts b/readdir-stream/readdir-stream-tests.ts
new file mode 100644
index 000000000..a731e86ba
--- /dev/null
+++ b/readdir-stream/readdir-stream-tests.ts
@@ -0,0 +1,8 @@
+/// <reference path="./readdir-stream.d.ts" />
+/// <reference path="../node/node.d.ts" />
+
+import readdir = require('readdir-stream');
+
+var rs: NodeJS.ReadableStream;
+
+rs = readdir('foo');
diff --git a/readdir-stream/readdir-stream.d.ts b/readdir-stream/readdir-stream.d.ts
new file mode 100644
index 000000000..5c4818507
--- /dev/null
+++ b/readdir-stream/readdir-stream.d.ts
@@ -0,0 +1,11 @@
+// Type definitions for readdir-stream v0.1.0
+// Project: https://github.com/logicalparadox/readdir-stream
+// Definitions by: Bart van der Schoor <https://github.com/Bartvds>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+/// <reference path="../node/node.d.ts" />
+
+declare module 'readdir-stream' {
+	function readdir(dir: string): NodeJS.ReadableStream;
+	export = readdir;
+}
diff --git a/stream-to-array/stream-to-array-tests.ts b/stream-to-array/stream-to-array-tests.ts
new file mode 100644
index 000000000..a4803d051
--- /dev/null
+++ b/stream-to-array/stream-to-array-tests.ts
@@ -0,0 +1,10 @@
+/// <reference path="./stream-to-array.d.ts" />
+/// <reference path="../node/node.d.ts" />
+
+import toArray = require('stream-to-array');
+
+var rs: NodeJS.ReadableStream;
+
+toArray(rs, (err, arr) => {
+
+});
diff --git a/stream-to-array/stream-to-array.d.ts b/stream-to-array/stream-to-array.d.ts
new file mode 100644
index 000000000..4fd48acdf
--- /dev/null
+++ b/stream-to-array/stream-to-array.d.ts
@@ -0,0 +1,6 @@
+/// <reference path="../node/node.d.ts" />
+
+declare module 'stream-to-array' {
+	function toArray(stream: NodeJS.ReadableStream, callback: (err: any, arr: any[]) => void): NodeJS.ReadWriteStream;
+	export = toArray;
+}
diff --git a/through2/through2-tests.ts b/through2/through2-tests.ts
new file mode 100644
index 000000000..6ea9a52d5
--- /dev/null
+++ b/through2/through2-tests.ts
@@ -0,0 +1,44 @@
+/// <reference path="./through2.d.ts" />
+/// <reference path="../node/node.d.ts" />
+
+import through2 = require('through2');
+
+var rws: NodeJS.ReadWriteStream;
+
+rws = through2({
+	objectMode: true,
+	allowHalfOpen: true
+}, function (entry: any, enc: string, callback: () => void) {
+	this.push('foo');
+	callback();
+}, () => {
+
+});
+
+rws = through2(function (entry: any, enc: string, callback: () => void) {
+	this.push('foo');
+	callback();
+}, () => {
+
+});
+
+rws = through2(function (entry: any, enc: string, callback: () => void) {
+	this.push('foo');
+	callback();
+});
+
+rws = through2();
+
+// obj
+rws = through2.obj(function (entry: any, enc: string, callback: () => void) {
+	this.push('foo');
+	callback();
+}, () => {
+
+});
+
+rws = through2.obj(function (entry: any, enc: string, callback: () => void) {
+	this.push('foo');
+	callback();
+});
+
diff --git a/through2/through2.d.ts b/through2/through2.d.ts
new file mode 100644
index 000000000..3eb16f2e6
--- /dev/null
+++ b/through2/through2.d.ts
@@ -0,0 +1,23 @@
+// Type definitions for through2 v 0.4.2
+// Project: https://github.com/rvagg/through2
+// Definitions by: Bart van der Schoor <https://github.com/Bartvds>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+/// <reference path="../node/node.d.ts" />
+
+declare module 'through2' {
+	import stream = require('stream');
+
+	var mod: mod.Through2;
+
+	module mod {
+		interface Through2 {
+			(transform?: (entry: any, enc: string, callback: () => void) => void, flush?: () => void): NodeJS.ReadWriteStream;
+			(opts: stream.DuplexOptions, transform?: (entry: any, enc: string, callback: () => void) => void, flush?: () => void): NodeJS.ReadWriteStream;
+			obj(transform: (entry: any, enc: string, callback: () => void) => void, flush?: () => void): NodeJS.ReadWriteStream;
+			push(data: any): void;
+		}
+	}
+	export = mod;
+}
+