Now, as you know, I’m not a fan of any single license. I like flexibility in my choices and because I like the choices to be mine, I tend to lean towards permissive-style licenses.
But OSTT traditionally has come down to GPL as the choice of choices, in nearly every report of every case study, the teams would default to GPL. At best, you’d hear a add-on of “or other license”, but GPL ruled. Via blogs.adobe.com