I need a webscraper to scrape user forums.    I'm doing this to analyze the data and quickly spot common gains, pains, jobs, quotes...    I've found a couple of them:   - https://www.zyte.com/data-extraction/   - https://www.octoparse.com/   - https://www.webscraper.io/    Questions:   1. What do you use if/when you "scan" user forums? How do you do it?   2. Does any of the abovementioned solutions offer any kind of visualizations?   3. Is there any free alternative? Can you suggest an alternative approach if it exists?