If you need simple scraping, I like traditional http request lib. For more robus...

freeslugs on Nov 14, 2017 | parent | context | favorite | on: Ask HN: What are best tools for web scraping?

If you need simple scraping, I like traditional http request lib. For more robust scraping (ie clicking buttons / filling text), use capybara and either phantomjs or chromedriver - easy to install using homebrew!