I'm a big tmux fan, but admittedly I've found myself switching between a lot of sessions recently and wishing it was a little bit more mouse friendly.

If you're a Mac user, and can forgive the shameless plug, you might find belfry.robgough.net useful. Connects to local and remote machines entirely through tmux, ssh and libghostty - populating the sidebar from tmux session info, and optionally adds a little Claude visibility in there for good measure.

There's even an iOS/iPadOS version – though for the moment you'll need to build that yourself. Source is all on Github.