|Headquarters||San Francisco, United States|
|Written in||Ruby, Go, and Vue.js|
|License||Community Edition: MIT License and other free software licenses|
Enterprise Edition: Source-available proprietary software
|Website||Enterprise Edition (including proprietary components): about.gitlab.com|
Community Edition (without proprietary components): gitlab.com/gitlab-org/gitlab-foss/
GitLab is a web-based DevOps lifecycle tool that provides a Git-repository manager providing wiki, issue-tracking and continuous integration and deployment pipeline features, using an open-source license, developed by GitLab Inc. The software was created by Ukrainian developers Dmitriy Zaporozhets and Valery Sizov.
The code was originally written in Ruby, with some parts later rewritten in Go, initially as a source code management solution to collaborate within a team on software development. It later evolved to an integrated solution covering the software development life cycle, and then to the whole DevOps life cycle. The current technology stack includes Go, Ruby on Rails, and Vue.js.
It follows an open-core development model where the core functionality is released under an open-source (MIT) license while the additional functionality is under a proprietary license.
In July 2013, the product was split into two distinct versions: GitLab CE: Community Edition and GitLab EE: Enterprise Edition. At that time, the license of both remained the same, being both free and open-source software distributed under the MIT License.
In February 2014, GitLab announced adoption of an open-core business model. GitLab EE is set under the source-available proprietary EE License, and contains features not present in the CE version. The GitLab CE licensing model remained unchanged and the company continued to develop and support CE edition. While GitLab EE changed to a restricted license, the source-code, issues and merge-requests remained publicly visible.
In March 2015, GitLab acquired Gitorious, a competing Git hosting service. Gitorious had at the time around 822,000 registered users. Users were encouraged to move to GitLab, and the Gitorious service was discontinued in June 2015.
In July 2016, the GitLab CEO confirmed the open-core business model of the company.
In September 2016, GitLab raised $20 million in Series B funding from August Capital and others.
In January 2017, a database administrator accidentally deleted the production database in the aftermath of a cyber attack. Six hours' worth of issue and merge request data was lost. The recovery process was live-streamed on YouTube.
On March 15, 2017, GitLab announced the acquisition of Gitter. Included in the announcement was the stated intent that Gitter would continue as a standalone project. Additionally, GitLab announced that the code would become open-source under an MIT License no later than June 2017.
In October, 2017, GitLab raised $20 million in Series C funding from GV and others.
In January, 2018, GitLab acquired Gemnasium, a service that provided security scanner with alerts for known security vulnerabilities in open-source libraries of various languages. The service was scheduled for complete shut-down on May 15. Gemnasium features and technology was integrated into GitLab EE and as part of CI/CD.
GitLab moved from Microsoft Azure to Google Cloud Platform on August 11, 2018, making the service inaccessible to users in Crimea, Cuba, Iran, North Korea, Sudan, and Syria, due to sanctions imposed by Office of Foreign Assets Control of the United States. To overcome this issue, the non-profit organization Framasoft provides a Debian mirror to make GitLab CE available in these countries.
On 19 September 2018, GitLab raised $100 million in Series D-round funding led by ICONIQ Capital.
In December 2019, it was reported that GitLab is expected to reach $100 million in annual recurring revenue in January 2020. In 2021, OMERS participated in a secondary shares investment in GitLab.
GitLab Inc. is an alumnus of the Y Combinator seed accelerator programme of its Winter 2015 batch. It raised $1.5 million as seed funding. In September 2015, GitLab raised $4 million in Series A funding from Khosla Ventures. It was followed by Series B funding of $20 million by August Capital along with Khosla Ventures in September 2016. In October 2017, Google Ventures joined the investors leading the Series C funding of $20 million. In September 2018 GitLab raised $100 million in Series D funding led by Iconiq at $1.1 billion valuation.
GitLab currently has 1,289 employees in 67 countries and regions.
GitLab's application offers functionality to automate the entire DevOps life cycle, from planning through to creation, build, verification, security testing, deployment and monitoring. GitLab is highly scalable and can be hosted on-prem or on cloud storage. It also includes a wiki, issue-tracking and CI/CD pipeline features. 
GitLab repository size limits
GitLab allows all repositories to be up to 10 Gigabytes in size. GitLab currently does not have any limits on how large a single file can be, as long as it stays under the 10 Gigabyte limit.
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- "GitLab 12.1 released with Parallel Merge Trains and Merge Requests for Confidential Issues". https://about.gitlab.com/releases/2019/07/22/gitlab-12-1-released/.
Original source: https://en.wikipedia.org/wiki/ GitLab. Read more