Question filters

If I have a best software question and I know that what I’m looking for has very specific constraints, it would be nice if I could filter out all other answers.

For example, filters like:
Free | Paid
XP | Vista | 7 | 8 | 9 | MacOS | *nix
Android | iOS
Open Source | Proprietary

Ideally I imagine those filters be custom for each question with some pre-defined templates for most common uses.