Scrapy - Scrapy | A Fast and Powerful Scraping and Web Crawling Framework
RateMe - Rate your friends, just like in Black Mirror ⭐️⭐️⭐️⭐️⭐️
StormCrawler - StormCrawler is an open source SDK for building distributed web crawlers with Apache Storm.
Provoq - Tinder + Facemash. Dating app with ranking
Apache Nutch - Apache Nutch is a highly extensible and scalable open source web crawler software project.
Facerank - Find your best Tinder photo