Hello, Community Advocate from GitLab here. We are an open core company. We ship two editions - Community Edition and Enterprise Edition. CE is completely open

Hello, Community Advocate from GitLab here. We are an open core company. We ship two editions - Community Edition and Enterprise Edition. CE is completely open source and licensed under MIT license. EE is proprietary, closed source code but we try to work in a way similar to GitLab CE: the issue tracker is publicly viewable and the EE license allows modifications. In conclusion (TLDR), GitLab has an open core business model and ships both open and closed source software.