Scrapy - Scrapy | A Fast and Powerful Scraping and Web Crawling Framework
ifttt - IFTTT puts the internet to work for you. Create simple connections between the products you use every day.
StormCrawler - StormCrawler is an open source SDK for building distributed web crawlers with Apache Storm.
Zapier - Connect the apps you use everyday to automate your work and be more productive. 1000+ apps and easy integrations - get started in minutes.
Apache Nutch - Apache Nutch is a highly extensible and scalable open source web crawler software project.
n8n.io - Free and open fair-code licensed node based Workflow Automation Tool. Easily automate tasks across different services.