PortChecker.cc
Port Manager
Port Checker.Net
Check NAT
Speedtest.net
Fing
PortsMonitor
Check open ports online

DevTools Advanced
FullStackToolkit
DevFinanceTools
JSON Formatter & Validator
AllDevToolsHub
Boop
DeveloperTools.Tech
120 free browser-based developer utilities. No sign-up required.

Which is more popular?
Based on our record, Port Checker seems to be more popular. It has been mentioned 263 times since March 2021.
Website, pricing, platforms and company facts side by side.
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PC
Port Checker
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|---|---|---|
| Website | portchecker.co | devtoolstack.io |
| Pricing | — | |
| Listed in |
What each product offers, as listed by its team.

Possible disadvantages
Possible disadvantages
Walkthroughs and reviews on video.
AI Multiagent Port Checker with Examples
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How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using Port Checker and DeveloperToolStack. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.

Hello, I have an Xfinity tg1682g router/modem combo and it requires you to portforward through the xfinity app, which I did. I have opened ports 27014-27017 tcp/udp, and even used the site portchecker.co to see if my port is open, and it... Source: almost 3 years ago
What router do you have? If portchecker.co isn't showing that the port is open, then your port forwarding didn't work. Source: about 3 years ago
You can check if your port forwarding worked by using a site like https://portchecker.co/. Source: about 3 years ago
Tracking DeveloperToolStack since Aug 2026.
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