Blue Ocean vs GitLab CI: What are the differences?
Developers describe Blue Ocean as "A reboot of the Jenkins CI/CD User Experience". Designed from the ground up for Jenkins Pipeline and compatible with Freestyle jobs, Blue Ocean reduces clutter and increases clarity for every member of your team. On the other hand, GitLab CI is detailed as "GitLab integrated CI to test, build and deploy your code". GitLab offers a continuous integration service. If you add a .gitlab-ci.yml file to the root directory of your repository, and configure your GitLab project to use a Runner, then each merge request or push triggers your CI pipeline.
Blue Ocean and GitLab CI belong to "Continuous Integration" category of the tech stack.
"Beautiful interface" is the primary reason why developers consider Blue Ocean over the competitors, whereas "Robust CI with awesome Docker support" was stated as the key factor in picking GitLab CI.
Blue Ocean is an open source tool with 2.49K GitHub stars and 435 GitHub forks. Here's a link to Blue Ocean's open source repository on GitHub.
According to the StackShare community, GitLab CI has a broader approval, being mentioned in 210 company stacks & 93 developers stacks; compared to Blue Ocean, which is listed in 4 company stacks and 10 developer stacks.