Question: I'm looking at the official [angular2-quickstart](https://angular.io/docs/ts/latest/quickstart.html#!#package-json)...

Looking at **package.json**, I see :

```
"dependencies": {
  "@angular/common":  "2.0.0-rc.1",
  "@angular/compiler":  "2.0.0-rc.1",
  "@angular/core":  "2.0.0-rc.1",
  "@angular/http":  "2.0.0-rc.1",
  "@angular/platform-browser":  "2.0.0-rc.1",
  "@angular/platform-browser-dynamic":  "2.0.0-rc.1",
  "@angular/router":  "2.0.0-rc.1",
  "@angular/router-deprecated":  "2.0.0-rc.1",
  "@angular/upgrade":  "2.0.0-rc.1",

  "systemjs": "0.19.27",
  "es6-shim": "^0.35.0",
  "reflect-metadata": "^0.1.3",
  "rxjs": "5.0.0-beta.6",
  "zone.js": "^0.6.12",

  "angular2-in-memory-web-api": "0.0.7",
  "bootstrap": "^3.3.6"
}

```

Reading other tutorials on the web, the `@angular/...` are replaced with `angular2`. Why is it so? 2 different packages for angular2?

I ask because running the Angular2-quickstart code on my machine the `system.src.js` file and the `app` folder are not found...

Also can the `@angular` thing be the problem of my issue ?

Answer: 
The `angular2` name in modules names is for versions before RC (release candidate) versions (beta ones) and the `@angular` one for RC versions.

RC versions are really fresh so most of tutorials use beta versions...
AFAIK `@angular` is the Angular namespace name in the NPM repository.