Appveyor vs Concourse: What are the differences?
Appveyor: Continuous Integration and Deployment service for busy Windows developers. AppVeyor aims to give powerful Continuous Integration and Deployment tools to every .NET developer without the hassle of setting up and maintaining their own build server; Concourse: 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.
Appveyor and Concourse belong to "Continuous Integration" category of the tech stack.
"Github integration" is the primary reason why developers consider Appveyor over the competitors, whereas "Real pipelines" was stated as the key factor in picking Concourse.
Concourse is an open source tool with 3.99K GitHub stars and 482 GitHub forks. Here's a link to Concourse's open source repository on GitHub.
According to the StackShare community, Concourse has a broader approval, being mentioned in 18 company stacks & 17 developers stacks; compared to Appveyor, which is listed in 19 company stacks and 16 developer stacks.