The FSF and opensource.org each maintain a long list of licenses. A broad overview is nearly useless. It leads to the paradox of choice. What you want is eithe

The FSF and opensource.org each maintain a long list of licenses. A broad overview is nearly useless. It leads to the paradox of choice. What you want is either the GPL, LGPL, MIT, or Apache license. Or, people have answered this very common question. A Google search for "which open source license should I use" - including the quotes! - gives over 300 hits. One leads to http://choosealicense.com/ http://choosealicense.com/ .