While "Git" is a distributed version control system that tracks code changes, "GitHub," "GitLab," and "Bitbucket" are online platforms that host Git repositories. GitHub is the most widely used, GitLab provides a more complete DevOps suite, and Bitbucket is frequently chosen by teams that already use Atlassian tools like Jira because of its smooth integration with them. In essence, "Git" is the technology, and the other services allow you to use Git on the web with extra features like issue tracking and collaboration tools.
Significant differences:
Git:
A command-line utility for managing code versions locally.
It cannot independently host repositories publicly.
It needs a different hosting provider, such as GitLab or GitHub, in order to exchange code.
GitHub:
The biggest and most popular platform for hosting Git repositories is called GitHub.
Close attention to community cooperation and open-source initiatives.
Comprehensive marketplace integrations with an easy-to-use UI.
GitLab:
Beyond just basic Git hosting, GitLab provides a full DevOps platform with capabilities like code review, bug tracking, and CI/CD pipelines.
It is open-source and enables self-hosting on own servers.
Considered to be a suitable choice for groups that require a thorough development process.
Bitbucket:
Integrates nicely with Jira and Confluence, among other Atlassian technologies, and is owned by Atlassian.
Teams that currently make extensive use of Atlassian products might like it.
This could be a wise option for private repositories with more stringent access regulations.
Selecting the correct platform:
For the majority of independent developers and open-source initiatives: GitHub.
Teams seeking a complete DevOps suite with the ability to self-host: The GitLab
For groups that are already utilising Atlassian solutions and giving integration top priority: Bitbucket