Open source · MIT · Single file

Free scripts and tools you can read before you run.

Sika Nexus is a channel for practical, self-contained utilities: one Python file, plain text, no installer, no account, no telemetry. Read the source, then run it on your own machine.

  • Python 3.9+
  • Windows · macOS · Linux
  • Runs locally
Sika Nexus mascot: a white cat with blue eyes wearing black headphones and a blue bandana.

Sika Nexus · est. free scripts

// library

Tools

One tool today. Everything here ships as source you can inspect, MIT licensed.

Python · dashboard

Who Is My PC Talking To?

A local dashboard that shows the remote internet connections your own computer makes, the app that owns each one when the OS provides it, the remote IP, port and protocol, and — optionally — the approximate location of each remote address on an animated world map.

  • Click an app to focus only its connections.
  • Animated world map with arcs to each remote address.
  • Hotkeys: Space pause · F fullscreen · T table · H clean view · Esc clear focus.
  • A STOP button, so you stay in control.
  • Never captures packets or reads the contents of traffic — only connection metadata from the OS.

// channel

Follow the channel

Release notes, code walk-throughs and new tools are posted here. No newsletter, no signup, no tracking.

Start with one file

Who Is My PC Talking To? is a single Python script you can read end to end in a few minutes.