Question: Is there a free web scraping tool that can schedule data extraction at regular intervals?

If you're looking for a free web scraping tool that can run data extraction jobs at a set interval, ParseHub is a good choice. It offers a simple interface to extract data from websites with no programming skills required. ParseHub can run scheduled jobs, so you can set up recurring data extractions, and it's a good tool for jobs like backing up business cases, finding sales leads and aggregating data.

Another option is Simplescraper, which offers a free Chrome extension and cloud automation. You can schedule data extractions, and it has features like structured data extraction, automated cloud scraping and API generation. Simplescraper is good for market research and automation, and it offers a free plan with 100 cloud scrape credits to get you started.

You might also want to check out Apify, a cloud-based service that offers a range of tools and templates for web scraping and browser automation. With cloud deployment, IP rotation and scheduling, Apify is good for automating web scraping and browser automation for AI and data science projects. It also offers a free plan, so you can try it out for small projects.

For a more AI-based approach, ScrapeStorm offers a powerful tool with its Smart Mode and Flowchart Mode, which lets you set up complex scraping rules. It's got a Schedule function for recurring data extractions, and other features like IP rotation and CAPTCHA bypassing. ScrapeStorm is good for individuals, teams and businesses that need to scrape websites efficiently.