App that allows to paste text snippets in any applicaton?

Solution 1:

Take a look at CodeBox http://www.shpakovski.com/codebox/

or Dash http://kapeli.com/dash

or Clipmenu http://www.clipmenu.com

Solution 2:

The perfect tool for this job is TextExpander - it allows you to insert snippets from a menu or using a shortcut such as ";;snippet". It is incredibly powerful and is high on my recommended list.

It's $35 but there is a free trial.

Solution 3:

there is a built in function in iOS and keyboard settings for Mac that offers shortcuts enter a shortcut and the phrase it expands into when you type the shortcut and a space afterwards.

it doesn't allow for line-breaks however

Solution 4:

Alfred with the PowerPack also lets you define snippets which are easily pasted anywhere. TextExpander as Tony Williams mentioned is a bit more convenient, but Alfred is cheaper and can do a lot more than just expanding snippets.