If the project is open sourced, the decompiler lets you know, and will load the public source.
You ever decompile something, just to learn that the project is open source and you can download the project. Or have you ever been curious if the project you are decompiling is open sourced? Let JestDecompile let you know and choose what you'd like to do.
JustDecompile is a decompiler. It does not need such an unrelated feature.
It's only one web search away from finding out a project's source model.