What are the Best Tools for AI-Powered Web Automation?

What tools or platforms have you explored for integrating AI with web automation, particularly those that simplify interaction with dynamic web environments or enable unique use cases like creating video demos, automating research, or testing software? This discussion is inspired by Nfig that launched today — It's an API for AI Agents to browse, click and do tasks on the web. Share your recommendations in the comments. :)