SEOBOTS.io - Easy to use bots for data mining and growth hacking: parsers, crawlers and much more.
TexAu - Growth automation to scale your business faster
Wicked PDF - PDF generator (from HTML) plugin for Ruby on Rails
Selenium - Selenium automates browsers. That's it! What you do with that power is entirely up to you. Primarily, it is for automating web applications for testing purposes, but is certainly not limited to just that.
Gauge - Gauge is a free and open source test automation framework that takes the pain out of acceptance...
Phantombuster - A marketplace of simple to use no-code APIs