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
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
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.