This is the best YouTube tool out there! I liked TubeBuddy back in the day and have tried Hootsuite and VidIQ, but they don't really offer anything you cannot do yourself. TubeSpanner is completely different as it has actual tools and apps, all optimised for video creators.
Want a new thumbnail? TubeSpanner has an amazing editor. Want some titles or ideas? TubeSpanner has AI. Want to create social posts? TubeSpanner has a tool better than Hootsuite. Whatever I want to do, TubeSpanner seems to have a tool to do it for me, or make it easier. It's brilliant! My only complaint is that it can be hard to learn, although that is probably because it just has so many tools and features.