I have installed VisualStudio 2013 Community, as per Microsoft documentation VisualStudio 2013 Community is free and will not require any license.
But today I saw a
Actually there is a dirty work around without signing-in , I used a free tool called RunAsDate from this link http://www.nirsoft.net/utils/run_as_date.html and set the date in the tool to the installation date. So the license never expires .