Maybe the question is not that clear so here is a little bit of background…
I want to know what framework or set of tools you are using in your daily test life, preferably open source.
And… in case you are doing automation I would be curious what tools do you combine for UI, API, Mobile and maybe also Performance, Security.
I must confess I do not yet have such a standard toolset at the moment but will want to build one from scratch and also document the whole process so that others will also benefit from it.