I was curious because I am a back-end tech nerd, and apparently "derpibooru" (I had no idea what to expect) is running on Elixir (I assume Phoenix) specifically this:
Edit: PLEASE BE AWARE OF THE LICENSE, it is AGPL licensed, which means if you copy any of the code into your back-end, your whole back-end must be open sourced, as a back-end nerd I stay away from anything AGPL'd just to be on the safe side of the law.
https://github.com/philomena-dev/philomena
Edit: PLEASE BE AWARE OF THE LICENSE, it is AGPL licensed, which means if you copy any of the code into your back-end, your whole back-end must be open sourced, as a back-end nerd I stay away from anything AGPL'd just to be on the safe side of the law.