My girlfriend needed a way to run sentiment analysis on Reddit threads in bulk, so I built this. It's a one-field web app that takes a thread ID and returns a CSV of all responses' authors, comments, and post dates.
To use, clone the repo and run npm install. In lines 11-16 of index.js, add your API credentials. I recommend Not an Aardvark's Reddit Oauth Helper for getting these. Then run node index.js and browse to http://localhost:3000.
This tool uses snoowrap for its API calls.