Concourse vs Selenium: What are the differences?
Developers describe Concourse as "Pipeline-based CI system written in Go". Concourse's principles reduce the risk of switching to and from Concourse, by encouraging practices that decouple your project from your CI's little details, and keeping all configuration in declarative files that can be checked into version control. On the other hand, Selenium is detailed as "Web Browser Automation". 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. Boring web-based administration tasks can (and should!) also be automated as well.
Concourse belongs to "Continuous Integration" category of the tech stack, while Selenium can be primarily classified under "Browser Testing".
"Real pipelines" is the top reason why over 8 developers like Concourse, while over 149 developers mention "Automates browsers" as the leading cause for choosing Selenium.
Concourse and Selenium are both open source tools. Selenium with 14.9K GitHub stars and 4.97K forks on GitHub appears to be more popular than Concourse with 3.99K GitHub stars and 482 GitHub forks.
According to the StackShare community, Selenium has a broader approval, being mentioned in 776 company stacks & 440 developers stacks; compared to Concourse, which is listed in 18 company stacks and 17 developer stacks.