License for Open-Source Software w/ Plugins?
ThiagoHP asks: "I have developed MultiMAD, a rapid application development and prototyping for for mobile devices in my master's course, and now I want to share it with the community. It's written in Java and it has a plugin architecture in order to support different mobile device platforms (WAP, J2ME, PalmOS, etc). I want to give the freedom to anybody write their plugins, even closed-source, as long as the tool itself is not modified for them to run. This implies that GPL cannot be used. At the same time, I do not want any closed-source tool based in MultiMAD code, so licenses such as the Apache one cannot be used. Am I right in my assumptions regarding licenses? What license do you suggest?"
That's exactly what the LGPL is for.
Derivative of your code will be in LGPL, but code linked to it (as plugins or using it as a library) have no license requirement.
Check it out