Show HN: Boo – Screen-style terminal multiplexer built on libghostty
kylecarbs
65 points
22 comments
June 11, 2026
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Discussion Highlights (8 comments)
stereo
You've obviously written this because screen wasn't doing the right thing, but your readme only explains that it's a "young project, not a drop-in GNU screen replacement". What are its advantages over screen or tmux?
asar
this looks nice! i've been using herdr the last couple of weeks as a terminal multiplexer for agents, which works amazingly well.
darkteflon
Installed using the curl-to-bash on Sequoia and I’m getting “error: ReadOnlyFileSystem” on ‘boo new’. Can’t see any open issues on gh and nothing in the readme. Definitely interested in something like this - love ghostty and I’ve been finding Zellij a bit crashy recently (plus I don’t really need tabs).
johnfn
I think Cmux is the incumbent in the "screen-style terminal multiplexer built on libghostty" - any key differentiators here? https://cmux.com/
boltguo
Really dig the minimal approach here. Swapping the backend to libghostty is exactly the kind of clean architecture we need. Going to test drive this today.
ac29
Been using zmx for a few months and love it: https://github.com/neurosnap/zmx/ Very similar, based on libghostty
Scarbutt
One window per session This no good ;) Old busted screen can do multiple windows per session.
lavaman131
This is super cool. I've been a heavy tmux user for a long time and using it more with my coding agent sessions and prefer ghostty. What was the biggest challenge when it came to building a multiplexer directly on top of libghostty that you ran into?