Which open-source license is right to keep some advantage for me AND for the developer-community?

I know that this question has been asked a many times but there are at least that much different answers.

I'd like to release a software, i developend for about a year. So i would like to keep some advantages of this. The software generates some kind of infrastructure for app-development.

Anyway it would be great if other people could use and improve this software too.

1. Which license would be best for this project to get the best out of both sides (proprietary and open-source)?


2. Which kind of advantage provides the license?

Thank you very much.