Split provides a unified solution for feature flags, experimentation and continuous delivery, centralizing feature flag management. Split has a more complex offering than just feature flagging that includes A/B testing and experimentation. Has a free tier.split.io
Opsgenie integrates with over 200 of the best monitoring, ITSM, ChatOps, and collaboration tools. Paired with a flexible rules engine, Opsgenie notifies the right people on-call, enabling them to take rapid action.
From project planning and source code management to CI/CD and monitoring, GitLab is a complete DevOps platform, delivered as a single application. GitLab is up and coming, and especially great for its built-in support for testing and CI/CD.
Zoom video conferencing is reliable and usually great quality. It is easy to navigate for video meetings.