Concourse is described as 'CI that scales with your project'. There are more than 10 alternatives to Concourse for a variety of platforms, including Self-Hosted solutions, Linux, Mac, Windows and Online / Web-based. The best alternative is Jenkins, which is both free and Open Source. Other great apps like Concourse are Travis CI (Freemium), Buildbot (Free, Open Source), Drone.io (Freemium, Open Source) and Ansible Semaphore (Free, Open Source).
Jenkins is a fork of Hudson and is a continuous build system for software projects. The leading open source automation server, Jenkins provides hundreds of plugins to support building, deploying and automating any project.
Travis CI is a leading provider of continuous integration and delivery services and empowers software development teams to test and deploy their applications with confidence. Teams can easily sync their cloud platform projects with Travis CI to begin testing code in minutes.
Drone is a Continuous Delivery system built on container technology. Drone uses a simple YAML configuration file, a superset of docker-compose, to define and execute Pipelines inside Docker containers.
A collaborative network of nodes. Storm is the way to improve the management of your web application. Manage, monitor and stress test your web resources. Automation server, workflow, continuous integration, automatic development.