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# GitLab
## Canonical source
The canonical source of GitLab where development takes place is [hosted on GitLab.com](https://gitlab.com/gitlab-org/gitlab).
A FOSS source of GitLab is hosted on a [mirrored, read-only project on GitLab.com](https://gitlab.com/gitlab-org/gitlab-foss/).
## Free trial
You can request a free trial of GitLab Ultimate [on our website](https://about.gitlab.com/free-trial/).
## Open source software to collaborate on code
To see how GitLab looks please see the [features page on our website](https://about.gitlab.com/features/).
- Manage Git repositories with fine grained access controls that keep your code secure
- Perform code reviews and enhance collaboration with merge requests
- Complete continuous integration (CI) and continuous deployment/delivery (CD) pipelines to build, test, and deploy your applications
- Each project can also have an issue tracker, issue board, and a wiki
- Used by more than 100,000 organizations, GitLab is the most popular solution to manage Git repositories on-premises
- Completely free and open source (MIT Expat license)
## Editions
There are two editions of GitLab:
- GitLab Community Edition (CE) is available freely under the MIT Expat license.
- GitLab Enterprise Edition (EE) includes [extra features](https://about.gitlab.com/pricing/#compare-options) that are more useful for organizations with more than 100 users. To use EE and get official support please [become a subscriber](https://about.gitlab.com/pricing/).
## Licensing
See the [LICENSE](LICENSE) file for licensing information as it pertains to
files in this repository.
## Hiring
We're hiring developers, support people, and production engineers all the time, please see our [jobs page](https://about.gitlab.com/jobs/).
## Website
On [about.gitlab.com](https://about.gitlab.com/) you can find more information about:
- [Subscriptions](https://about.gitlab.com/pricing/)
- [Consultancy](https://about.gitlab.com/consultancy/)
- [Community](https://about.gitlab.com/community/)
- [Hosted GitLab.com](https://about.gitlab.com/gitlab-com/) use GitLab as a free service
- [GitLab Enterprise Edition](https://about.gitlab.com/features/#enterprise) with additional features aimed at larger organizations.
- [GitLab CI](https://about.gitlab.com/gitlab-ci/) a continuous integration (CI) server that is easy to integrate with GitLab.
## Requirements
Please see the [requirements documentation](doc/install/requirements.md) for system requirements and more information about the supported operating systems.
## Installation
The recommended way to install GitLab is with the [Omnibus packages](https://about.gitlab.com/downloads/) on our package server.
Compared to an installation from source, this is faster and less error prone.
Just select your operating system, download the respective package (Debian or RPM) and install it using the system's package manager.
There are various other options to install GitLab, please refer to the [installation page on the GitLab website](https://about.gitlab.com/installation/) for more information.
## Contributing
GitLab is an open source project and we are very happy to accept community contributions. Please refer to [Contributing to GitLab page](https://about.gitlab.com/contributing/) for more details.
## Install a development environment
To work on GitLab itself, we recommend setting up your development environment with [the GitLab Development Kit](https://gitlab.com/gitlab-org/gitlab-development-kit).
If you do not use the GitLab Development Kit you need to install and setup all the dependencies yourself, this is a lot of work and error prone.
One small thing you also have to do when installing it yourself is to copy the example development unicorn configuration file:
cp config/unicorn.rb.example.development config/unicorn.rb
Instructions on how to start GitLab and how to run the tests can be found in the [getting started section of the GitLab Development Kit](https://gitlab.com/gitlab-org/gitlab-development-kit#getting-started).
## Software stack
GitLab is a Ruby on Rails application that runs on the following software:
- Ubuntu/Debian/CentOS/RHEL/OpenSUSE
- Ruby (MRI) 2.6.3
- Git 2.8.4+
- Redis 2.8+
- PostgreSQL (preferred) or MySQL
For more information please see the [architecture documentation](https://docs.gitlab.com/ce/development/architecture.html).
## UX design
Please adhere to the [UX Guide](doc/development/ux_guide/index.md) when creating designs and implementing code.
## Third-party applications
There are a lot of [third-party applications integrating with GitLab](https://about.gitlab.com/applications/). These include GUI Git clients, mobile applications and API wrappers for various languages.
## GitLab release cycle
For more information about the release process see the [release documentation](https://gitlab.com/gitlab-org/release-tools/blob/master/README.md).
## Upgrading
For upgrading information please see our [update page](https://about.gitlab.com/update/).
## Documentation
All documentation can be found on <https://docs.gitlab.com>.
## Getting help
Please see [Getting help for GitLab](https://about.gitlab.com/getting-help/) on our website for the many options to get help.
## Why?
[Read here](https://about.gitlab.com/why/)
## Is it any good?
[Yes](https://news.ycombinator.com/item?id=3067434)
## Is it awesome?
[These people](https://twitter.com/gitlab/likes) seem to like it.
|
