Chef is the leader in web-scale IT automation. It gives us a model for automating IT infrastructure and applications that drive self-reliance across development and operations teams and helping businesses become faster, safer and more flexible.
Ansible, an open source community project sponsored by Red Hat, is the simplest way to automate IT. Ansible by Red Hat provides enterprise ready solutions to automate your entire application lifecycle from servers to clouds to containers and everything in between. Ansible Tower by Red Hat is a commercial offering that helps teams manage complex multi-tier deployments by adding control, knowledge, and delegation to Ansible powered environments.
GitLab is a company based on the GitLab open-source project, helping developers collaborate on code to build great things and ship on time. They are an active participant in their global community of customers and contributors, trying to serve their needs and lead by example. They have one vision: everyone can contribute to all digital content, and their mission is to change all creative work from read-only to read-write.