can I write commercial plugins and frontends?
The GPU core (without TGnutella) is under the GPL license. The GPL will ensure that any change will be to benefit of the entire user community. The delivered plugins and frontends are under the previously mentioned license, too. However, plugins as dynamic link libraries and frontends as executables are completely independent from GPU. If you write your own plugins and frontends, you might enforce any license on them because they are binary independent from the framework. Although it might be too early to develop commercial GPU apps, one day this might make sense.
