portchecker.io

Network Security

An open‑source API that checks whether a given host/port is reachable, useful for developers and network admins to troubleshoot connectivity, validate firewall rules, and test access points.

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Python Latest v4.1.0 · 1mo ago Security brief →

Features

Provides an HTTP endpoint to probe TCP port availability on arbitrary hosts or IPs
Supports both development (standalone Node + Python) and production deployments via Docker Compose
Exposes Prometheus metrics for monitoring API health and response times
Configurable environment variables for API URL, default host/port, and private‑IP checking

Recent releases

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v4.1.0 Breaking risk 1mo

Dependencies Breaking upgrade

uvicorn, litestar, Node upgrade

Open

v4.0.1 Bug fix 4mo

Refactored backend Dockerfiles to shrink images, added automated testing, refreshed UI and removed unused analytics, fixed a missing Docker stage target, and upgraded many dependencies to improve stability.

View release on GitHub

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