GetMacApps is a great little website that lets you build a custom bash script that lets you automate installing your favourite apps as easily as pasting a single line of code into the terminal window.
You can preview my chosen apps by following this link: My install manifest
or create your own at http://www.getmacapps.com/
If you want to view see the bash script the site generate you can view it here:
And in finally to use just paste the following line of text into your terminal:
N.B. the link below installs the apps I want and regularly used, you’re probably going to want to create your own..
curl -s http://www.getmacapps.com/raw/embvawlksr2p | sh