The article discusses six top Slack GitLab merge request integrations to enhance tech teams' productivity. These include Axolo for collaboration, CodeDog for easy setup, Eleminder for free pull request reminders, Zapier and Integromat for customization, Nazhryn's open-source integration, and the official Slack GitLab integration for issue management. Each integration has its unique features, benefits, and drawbacks, allowing teams to choose based on their specific needs. By integrating these tools, teams can improve communication, streamline processes, and ensure everyone stays on the same page.