Sonar
Dev tools
port management cli
SHOW HN2026
204points
77comments
#287of 4,366 in 2026
Top 7%of 2026 by points
How HN took it
MixedNo clear lean
14 positive, 11 neutral or asking, 0 mixed, 6 critical, out of 31 comments about the project. Thread score +0.30.
Idea: 9 for, 4 againstDesign: 1 for, 0 againstDocs: 0 for, 1 against
The thread, comment by comment
Each row is a top-level comment and its replies, in HN's order. Select a cell to open that comment on HN.
positive neutral or mixed critical about another commenter or something else the maker
What HN said
What people liked
Useful, saves remembering lsof flags
From 4 comments
Nice — the use case for this is immediately obvious. I've spent more time than I care to admit running `lsof -i :PORT` or `netstat -tulpn | grep PORT` trying to figure out what's…
diablevv on HNCan never remember the right lsof incantation for this and end up googling it every time. The Docker container detection is a nice touch — half the time whatever's squatting on…
derodero24 on HNlove this, i get tired of spamming lsof -i tcp:xxxx
Bradd3rs on HNHonestly, pretty cool. I was wondering if something like this existed. Right now I have scripts to kill the ports I use consistently to avoid issues when developing. Kudos!
kohexo on HN
Docker container info is a nice touch
From 2 comments
Can never remember the right lsof incantation for this and end up googling it every time. The Docker container detection is a nice touch — half the time whatever's squatting on…
derodero24 on HNI read the readme. :) Very nice. Thoughtful features. Get this on Homebrew!
jkestner on HN
Objections
lsof with a shell alias does the same job
From 3 comments
The README made me realize I just needed a simple `alias local-tcp-listeners='lsof -iTCP -sTCP:LISTEN'` in my `~/.bash_aliases` :)
Doublon on HNI just have an alias in my .bashrc :)
RonanSoleste on HNCan it do things that existing tools build into my distro cannot? It looks to me like a convenience tool. Which is fine, but i see no need for it myself
RonanSoleste on HN
Title suggests listing and killing only; the tool does more
From 2 comments
Its funny bc the title suggests a tool for listing and killing
fionic on HNHN is a place where people can be expected to go beyond the title (though I like the limited script and am glad it was posted). Misleading titles are not uncommonly flagged and…
tomcatfish on HN
Name clashes with SonarQube
From 3 comments
Nice! I always forget the lsof flags and end up googling them every time. Would be cool if it could run in the system tray and show what's running on your ports at a glance.…
maciejj on HNSonar as in SonarQube? That's an interesting choice for a name :)
moezd on HNyou picked a unique name. There is already a massively popular product called Sonar
Brainspackle on HN
Requests
Tray app or system tray view of ports
From 1 comment
Nice! I always forget the lsof flags and end up googling them every time. Would be cool if it could run in the system tray and show what's running on your ports at a glance.…
maciejj on HN
Homebrew install
From 2 comments
I read the readme. :) Very nice. Thoughtful features. Get this on Homebrew!
jkestner on HNI recommend just doing a tap in the same repo rather than adding this to homebrew first.
0x457 on HN
Show Tailscale or custom host IP instead of localhost for Docker URLs
From 1 comment
Would be nice to have a flag to customize the URL displayed for Docker containers. I connect to my host via Tailscale, but I can’t open links with localhost. It would be helpful…
klaushardt on HN
Interactive multiselect kill
From 1 comment
Nice util. It should be possible to kill inline. I like clack/prompts. See its multiselect API. https://github.com/bombshell-dev/clack/tree/main/packages/prompts
mustafa0x on HN
Questions
Can it do things existing distro tools cannot?
From 1 comment
Can it do things that existing tools build into my distro cannot? It looks to me like a convenience tool. Which is fine, but i see no need for it myself
RonanSoleste on HN
Alternatives named
killport
From 1 comment
I am absolutely installing this and starting to use it daily! For the even less patient there's also this (not mine): https://github.com/jkfran/killport
pdimitar on HN
Evan Hahn's murder script
From 1 comment
Have a look at Evan Hahn's murder util: https://codeberg.org/EvanHahn/dotfiles/src/commit/843b9ee13d949d346a4a73ccee2a99351aed285b/home/bin/bin/murder
pluc on HN
lsof shell aliases and functions
From 2 comments
i have this in my .zshrc which provides same functionality: ``` lk() { if [ $# -eq 0 ]; then local output=$(sudo lsof -iTCP -sTCP:LISTEN -n -P) elif [ $# -eq 1 ]; then local…
chwzr on HNThe README made me realize I just needed a simple `alias local-tcp-listeners='lsof -iTCP -sTCP:LISTEN'` in my `~/.bash_aliases` :)
Doublon on HN
ctop
From 1 comment
ctop is great for docker containers
spl757 on HN