A function of product marketing is to perform market analysis and gather information about competitors to better position GitLab in our go-to-market efforts.
GitLab exists in an ecosystem of DevOps tools and might need to interact with any number of these tools. Many have over-lapping capabilities, but that does not mean that we necessarily directly compete with them. A user would need to patch together multiple solutions from this list in order to get all the functionality that is built-in to GitLab as a single application for end-to-end DevOps. Other places that list tools in various DevOps categories include CA, XebiaLabs, and CNCF