There are open source Q&A packages that copy Stack and would do what you want.
Note that once a topic gets more than 50 responses you can click or tap the Summarize button to filter the posts and this does factor likes, among other things.
There are open source Q&A packages that copy Stack and would do what you want.
Note that once a topic gets more than 50 responses you can click or tap the Summarize button to filter the posts and this does factor likes, among other things.