
bolt.new
VS Code
Sublime Text
Microsoft Visual Studio
WebStorm
Android Studio
RubyMine
Code, create, andlearn together. Use our free, collaborative, in-browser IDE to code in 50+ languages — without spending a second on setup.

Port Monitor
MacMonitor
Open Ports
See what's exposed. The macOS menu bar app that shows every open port, tunnel, VPN, and container — before it's a problem.
Which is more popular?
Based on our record, replit seems to be more popular. It has been mentioned 652 times since March 2021.
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | replit.com | bosun.dev |
| Pricing | ||
| Company | Startup from the United States | — |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of replit yet.
Bosun is a native macOS menu bar app that shows you everything your Mac has open to the network, right when you need it, with no Terminal digging required. It runs lsof in the background to list every listening port, then goes further than a simple port scanner: it maps each port to the process...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


No analysis of replit yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Repl.it SciTech Talk | MIT Arab SciTech 2019
More videos
No Bosun.dev videos yet. You could help us improve this page by suggesting one.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing replit and Bosun.dev.
Bosun.dev's answer:
Swift 5.9+, SwiftUI + AppKit (NSStatusItem), lsof for port scanning, Sparkle for auto-updates, Polar for licensing/payments. No Electron, no third-party dependencies beyond Sparkle.
Bosun.dev's answer:
Developers who run local dev servers, Docker containers, and tunnels (ngrok/Cloudflare) daily and need instant visibility into what's bound to which port, without opening Terminal or Activity Monitor.
Bosun.dev's answer:
Bosun is the only menu bar tool that unifies port scanning with network context: it maps ngrok/Cloudflare tunnels, native VPN status, Docker containers, and SSH -L forwards to the process actually holding each port, then lets you kill it in one click. Most alternatives only do one of those things.
Bosun.dev's answer:
iStat Menus monitors the system but not tunnels or containers. Little Snitch blocks connections but doesn't show you what's already running. Seeports comes closest (port scanning for Docker/K8s/dev servers) but lacks tunnel and VPN detection. Bosun covers all of it natively, with zero third-party dependencies, no Electron overhead, and a one-time price instead of a subscription.
Bosun.dev's answer:
Built out of a personal need: constantly losing track of which local dev server, Docker container, or forgotten tunnel was holding a port, and resorting to lsof in Terminal every time. Bosun turns that into a native, always-visible menu bar view.
Share your experience with using replit and Bosun.dev. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Replit’s environment also includes AI-powered tools to help with code suggestions and bug fixes, making it useful for beginners and advanced programmers alike. With Replit, you can start coding instantly without...
Replit’s Ghostwriter is used in browser-based coding environments where simplicity and instant collaboration matter most. It’s a natural fit for education, prototyping, or remote work where installation isn’t...
Replit is a simple yet powerful online ide, editor, compiler, interpreter, and repl. Code, compile, run, and host in 50+ programming languages. The collaborative browser based ide – replit.
We have no reviews of Bosun.dev yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


This is one of the strangest side effects of AI-assisted development becoming mainstream. Tools such as Lovable, v0, Bolt, Base44, Google AI Studio, Replit, and Claude can take a plain-language description and turn it into a working... - Source: dev.to / about 1 month ago
Replit is closer to an AI development environment than a traditional frontend generator. - Source: dev.to / about 2 months ago
• Memory leak? Folder hits 5% → SOLIDIFIES → delete clean Code: https://replit.com/@clydetosspon/tripleos [after you make Replit] Neuromorphic chip makers: this matches your spike physics perfectly (0W idle) Full story in comments. AMA! - Source: Hacker News / 6 months ago
Tracking Bosun.dev since Jul 2026.
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Manage, browse and kill open ports on your Mac.
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