Hi People,
I'd like to deploy the latest edition of SharePoint Foundation 2013 SP1 on my current Windows Server 2012 R2, the database will be on the separate SQL Server 2012 host, so I wonder if I need additional license or it is totally free for me to use with 500 users internally ?
You will need windows server licenses, windows server CALs, and with 500 users, likely a SQL server license(s) (express won't cut it for that many users) and SQL Server CALs.
So sharepoint foundation itself will be free, of course. But none of the surrounding technology to run it will be.