Selenium - Selenium automates browsers. That's it! What you do with that power is entirely up to you. Primarily, it is for automating web applications for testing purposes, but is certainly not limited to just that.
UI.Vision - Modern open-source task and test automation tool and Selenium IDE.
Scrapy - Scrapy | A Fast and Powerful Scraping and Web Crawling Framework
TestComplete - TestComplete Desktop, Web, and Mobile helps you create repeatable and accurate automated tests across multiple devices, platforms, and environments easily and quickly.
Rapise - Discover Rapise, the cross-browser, automated software testing tool with the most powerful and flexible test automation features on the market. Try it today!
KantuX - KantuX is a visual web browser that can automate any website by taking screenshots.