gk.Gergő’s Lab
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Gergő Kálmán / A personal corner of the internet

Built out of
curiosity.

I build things, break things, and occasionally
make them useful.

My everyday work connects .NET applications, databases, and real hardware. This lab is home to my side projects, useful tools, and technical rabbit holes.

Explore the LabView projects
What I’m doing now
THE WORKBENCHFIG. 001
gk.MAKE IT WORK
x: 47.49y: 19.04
~Pick a node. Try something.

A little code playground

Edit this JSON and watch it take shape. Everything stays in your browser.

{
  "curiosity": true,
  "coffee": 2
}
Open the full JSON tool →
Software/Self-hosting/Local AI/Automation/Infrastructure/Game experiments
01

On the workbench

All projects
02

Small tools. Less friction.

Explore all 8 tools

JSON Formatter

A little order for your curly brackets.

Base64 Converter

Encode it. Decode it. Make it readable.

Password GeneratorNEW

Random by design. Private by default.

UUID Generator

Unique identifiers. Zero ceremony.

Runs in your browser. Your input stays with you. No sign-up, no nonsense.

A small break from useful things

There goes the weekend.

Take the pager for a Friday that goes wrong seven ways, guess what broke from a single log line, or drive out to a sensor that won’t talk.

Enter the arcade 5 games · real troubleshooting · zero installs
03

Notes from the lab

All notes

Local AI, without the overkill

22 Sept 2026/AI

When Docker DNS stops making sense

19 Sept 2026/Docker

A reverse proxy is a boundary, too

16 Sept 2026/Infrastructure

04

Right now

September 2026

A little more self-hosted.

Building this lab, exploring local AI, and making the homelab a little less held together by memory.

The current chapter

Some things are useful. Some are here because I got curious.

A little about me
interactive cornerbrowser only

Curiosity has a command line.

A toy terminal with real places to explore. Type help, or try a shortcut.

Welcome to the lab. No installation required. ▍

Field notes · actual changes

Built. Broken. Fixed.

/ Workspace

A control room, with a handbook.

HomeOS now has its own workspace, device inspection, a session timeline and a guided night shift. Lab Control reads real website checks, with explicit gaps and sample coverage. The handbook explains how both environments work.

Enter the workspace

/ Preview

A sneak peek at HomeOS.

HomeOS is still being built, so here’s where it’s heading: a simulated home with rooms, automations, an event bus and an assistant that calls small, focused tools. The router is occasionally in the bathroom.

Open the preview

/ Expanded

The lab became a small world.

Friday Deploy grew to seven incidents on one shared network model, with custom outages you can send to a friend. New: a request journey with fault switches, a daily “What broke?” quiz, an RS485 field call-out simulator, and a NOC gremlin with opinions.

Open the arcade