Open Port Checker
Open Port Checker is a network utility for macOS that checks the status of open and closed ports on a local machine or remote host. It allows users to quickly verify whether specific ports are listening and accessible, making it useful for network troubleshooting, server diagnostics, security audits and software development workflows. The app typically accepts a hostname or IP address and a port number, then reports the connection status. It serves system administrators, developers and IT professionals who need a lightweight alternative to command-line tools like netstat or nmap.
AI Recommendation
1 suggestionWe have limited public information about this app — no official vendor site or GitHub repository appeared in our search. Based on the bundle ID (upredsun.open-port-checker), this appears to be a small independent or community-developed utility. Contact the developer directly to ask whether a native Apple Silicon build is planned. The Intel-only build will stop launching entirely when Apple removes Rosetta 2 in macOS 28 (September 2028), so you should clarify the app's development status sooner rather than later if you rely on it. If the developer is no longer active, consider using command-line alternatives like nc (netcat), telnet, or nmap — all of which run natively on M-series Macs and offer more powerful port-checking capabilities.
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