I wish to allow user to use my software for free but not to give the source code.
Can you recommend a license?
I wish to allow user to use my software for free but not to give the source code.
Can you recommend a license?
You can do without a license. Default copyright prevents the user to copy or distribute the code or program without your explicit permission.
This looks like a reasonable one, from SIL: http://www.sil.org/computing/catalog/freeware.html