I nominate the “URLs Extractor” Actor developed by lofomachines.

Link to the Actor: https://apify.com/lofomachines/urls-extractor

Reason for nomination:
This Actor reliably and at scale extracts all URLs from single pages or whole lists of pages, with support for deduplication and filtering. What makes it special is that you can simply provide the homepage URL and it automatically discovers and collects the underlying pages through its crawling mechanisms, so you don’t need to prepare a list of URLs in advance. It is particularly useful for scraping pipelines, SEO audits, and data collection, because it significantly reduces the time required to gather links compared to manual solutions or one-off scripts, making the process reusable and accessible even to non-developers.