GitLab Inc. is an American company that operates and develops GitLab, an open-core DevOps software package that can develop, secure, and operate software. GitLab includes a distributed version control system based on Git, including features such as access control, bug tracking, software feature requests, task management, and wikis for every project, as well as snippets.

The open-source software project was created by Ukrainian developer Dmytro Zaporozhets and Dutch developer Sytse Sijbrandij. In 2018, GitLab Inc. was considered to be the first partly Ukrainian unicorn. GitLab has an estimated over 30 million registered users, including 1 million active licensed users. There are more than 3,300 code contributors and team members in 60+ countries.

GitLab Inc. was established in 2014 to continue the development of the open-source code-sharing platform launched in 2011 by Dmytro (or Dmitriy) Zaporozhets. The company's co-founder Sytse Sijbrandij initially contributed to the project and decided to build a business around it.

GitLab offers its platform using a freemium model. Since its founding, GitLab Inc. has promoted remote work and is known as one of the largest all-remote companies in the world. By 2020, the company employed 1300 people in 65 countries.

The company participated in the YCombinator seed accelerator Winter 2015 program. By 2015, notable customers included Alibaba Group and IBM.

In January 2017, a database administrator accidentally deleted the production database in the aftermath of a cyberattack, causing the loss of a substantial amount of issue data and merge request data. The recovery process was live-streamed on YouTube.

In April 2018, GitLab Inc. announced integration with Google Kubernetes Engine (GKE) to simplify the process of spinning up a new cluster to deploy applications.

In May 2018, GNOME moved to GitLab with over 400 projects and 900 contributors.