anchor.diff:    Good for demos, documentation samples, and early stage development (before we even have a server).
     Learn about it in the [Http Client](server-communication.html#appendix-tour-of-heroes-in-memory-server) chapter.
     
  -  ***bootstrap*** - [bootstrap](http://getbootstrap.com/) is a popular HTML and CSS framework for designing responsive web apps.
  +  ***bootstrap*** - [Bootstrap](http://getbootstrap.com/) is a popular HTML and CSS framework for designing responsive web apps.
     Some of the documentation samples improve their appearance with *bootstrap*.
     
   a(id="dev-dependencies")
  
positive.code:   This package also includes the bootstrapStatic method for bootstrapping applications for production builds that pre-compile templates offline.
    
    ***@angular/platform-browser-dynamic*** - Providers and a bootstrap method for applications that
    compile templates on the client. don’t use offline compilation.
    We use this package for boostrapping during development and for boostrapping plunker samples
    
    ***@angular/http*** - Angular's http client
    
    ***@angular/router*** - Component router.
    
  
negative.code:   They do not have to be deployed with the production application although there is rarely harm in doing so.
  
    ***[concurrently](https://www.npmjs.com/package/concurrently)*** - 
    A utility to run multiple *npm* commands concurrently on OS/X, Windows, and Linux operating systems.
    
    ***[lite-server](https://www.npmjs.com/package/lite-server)*** - 
    A light-weight, static file server, written and maintained by [John Papa](http://johnpapa.net/) 
    with excellent support for Angular apps that use routing.
    
    ***[typescript](https://www.npmjs.com/package/typescript)*** - 
    The TypeScript language server including the *tsc* TypeScript compiler.
    
    ***[typings](https://www.npmjs.com/package/typings)*** - A manager for TypeScript definition files.
    Learn more about it in the [TypeScript Configuration](typescript-configuration.html#typings) chapter.
    
    This section likely grows as we add more tools, testing, and build support. 
  