Open source templates for extracting structured data from websites
Track price drops, stock changes, and deals on Amazon products
Track prices, bids, and availability on eBay
Track releases, stars, forks, and activity on GitHub repositories

Track downloads, versions, and dependencies on npm
Track upvotes, comments, and awards on Reddit posts
Track likes, retweets, and replies on X/Twitter
Track views, likes, and comments on YouTube videos
Track stories, comments, and points on Hacker News