In my cynical view, herder now seems to be an attempt to commercialize tmux by adding superficial polish. I am wary of VC backed developer tools that seek to innovate in well established open source niches. Herdr by default is mouse focused, has very friendly UI interactions, and has some niche UI support for agents running in panes. Great. Now it also has a profit motive and ROI pressures. I don't see this ending well.