Bitbucket is a web-based version control repository hosting service owned by Atlassian, for source code and development projects that use either Mercurial or Git revision control systems.
Robust platform for code repository management, with integration options for continuous integration and deployment. Its seamless collaboration features, including pull requests and code reviews, streamline development processes, fostering a more efficient and productive team environment
The most convenient tool for code review, very conveniently it integrates with Jira and Confluence. Atlassian pays a lot of attention to detail, and they understand what developers' needs are. I can't believe there is still no thing like the "PRs you need to review" list in Github.
I used to use Bitbucket and miss it a lot now
Though there was Bitbucket Power-up for Trello, but still this will change a lot, its fast, more intrusive, easier to collaborate between DevOps & Managers or even support team.