browser-sync 
Keep multiple browsers & devices in sync when building websites.
BrowserSync is developed and maintained internally at JH, follow @browsersync on twitter for news & updates.
##Features
- Scroll - I can keep your pages in sync when scrolling.
- Forms - You fill out a form in one browser, I'll copy the data to all the others.
- Links - I'll watch your clicks & and make all the other browsers follow you.
- CSS injecting - I can even watch your CSS files & inject them when they change.
- Live Reload - I can also watch files like HTML and PHP & when they change I can reload all browsers for you.
- Built-in Server - Yep, I can serve static files too if you need me to (uses Connect).
- Use with any back-end setup - Browser-sync includes a proxy option so that it can be used with any existing PHP, Rails, Python, Node or ASP.net setup.
##When is it useful? It's pretty useful when used with a single browser, watching a CSS file for changes & injecting it. But the real power comes when you're building responsive sites and using multiple devices/monitors because it can keep all browsers in sync & make your workflow much faster.
##Install
npm install -g browser-sync
##How to use it
Using Grunt?
There's a separate plugin for that
Using Gulp?
No problem, here's a setup guide
Screencasts
Some listed here Want any more? Something specific? ask me nicely @shaneOsbourne
##Support If you've found Browser-sync useful and would like to contribute to its continued development & support, please feel free to send a donation of any size - it would be greatly appreciated!
Contributors
433 Shane Osbourne
13 Hugo Bessa
3 Marek 'saji' Augustynowicz
2 Hugo Dias
2 brutaldev
2 Paul Robertson
2 chase_chou
1 Tony Holdstock-Brown
1 Werner van Deventer
1 mericson
1 Cameron Spear
1 viktor hesselbom
1 Carl Henderson
1 Dave Hall
1 Guillaume Lambert
1 Jory Graham
1 Robert Vock
1 Sylvain Emery
License
Copyright (c) 2014 Shane Osbourne Licensed under the GPL license.