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Arda Can Kırkoç

Why is port 3000 always in use?

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Room Service
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At some point every dev ends up here

you run a project
something fails
you try again

and suddenly
port 3000 is already in use

so you open terminal
run lsof
grep
awk
kill

and repeat this loop more times than you’d like to admit

I got tired of this and built something into Room Service
that shows all active local servers in real time
and lets you kill them instantly

curious how others deal with this
terminal tabs? browser tabs? menu bar tools?

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Orhan Kilic

I feel this in my bones! 😅 As a full-stack dev, my terminal history is basically just a graveyard of lsof -i :3000 and kill -9 commands.

Honestly, half the time I just lose my patience and rage-type killall node and hope I didn't break something else in the background! 😂

Having a visual, one-click kill switch for this is such a massive Quality of Life (QoL) improvement. As a fellow Mac utility maker (OptiClear), I absolutely love seeing tools that solve these hyper-specific, daily developer annoyances.

Awesome feature, Arda! 🚀

Arda Can Kırkoç

@orhan_kilic haha yeah same here, terminal history full of lsof and kill commands 😄

that whole “kill and hope nothing breaks” loop was exactly what I wanted to fix with this

really appreciate it 🙌

Orhan Kilic

@ardacankrko Mission accomplished then! 🎯 Left an upvote to support. Wishing you great momentum and a bug-free week ahead! 🚀 :)

Arda Can Kırkoç

@orhan_kilic  🚀🙏

Alper Tayfur

Thanks Arda, Because half the web dev world defaults to it 😅 React apps and Next.js dev servers commonly start on port 3000 by default, so it becomes the unofficial collision zone on every machine.

Your fix is actually super practical — this is one of those tiny annoyances every dev hits way too often. The “see all active local servers and kill instantly” part feels way nicer than the usual terminal ritual.

Arda Can Kırkoç

@alpertayfurr haha exactly, “unofficial collision zone” is the perfect way to describe it 😄

I was basically doing the same terminal dance over and over, so turning it into something visible and one-click felt like the obvious next step

really appreciate it 🙌