See also Do we want resource recommendation questions?, Are software recommendation questions on topic? and to a lesser extent When are software-recommendation questions on topic?.
As pointed out elsewhere, we already have tags that are meant to be about various "recommend me something" questions.
Given that there is a fair consensus for us accepting questions on the form "please recommend me an X to do Y" (where X so far has primarily been software), we should have a set of standards for what makes such a question acceptable, and ideally what makes for a good answer to such a question. As far as I can tell, we have so far been rather non-specific in this regard.
What should those standards be?
Please post separate answers discussing the questions and the answers respectively, as the standards for each are likely to be different.