DotCi vs Heroku CI: What are the differences?

DotCi: Jenkins plugin with GitHub and Docker integration. DotCi is a Jenkins plugin created by Groupon that makes job management easy with built-in GitHub integration, push-button job creation, and YAML powered build configuration and customization. It comes prepackaged with Docker support as well, which means bootstrapping a new build environment from scratch can take as little as 15 minutes. DotCi has been a critical tool for Groupon internally for managing build and release pipelines for the wide variety of technologies in their SOA landscape; Heroku CI: Fast, low-setup CI that’s easy to use. On every push to GitHub, Heroku CI runs your tests in a disposable Heroku app, so there’s never a wait time for a free CI worker. Tests run fast, on Performance dynos.

DotCi and Heroku CI can be primarily classified as "Continuous Integration" tools.

DotCi is an open source tool with 505 GitHub stars and 65 GitHub forks. Here's a link to DotCi's open source repository on GitHub.