Tools
Small helpers I wanted for my own homelab. They run in your browser. The port checker and Valheim generator send nothing anywhere; the DNS checker asks Cloudflare's and Google's public DNS directly, never this site.
Valheim world modifier generator
Pick combat, death penalty, resources, raids and portals, and get the exact -modifier server arguments and Docker env line.
DNS record checker
Look up records on Cloudflare and Google DNS side by side, with TTLs and how long a "doesn't exist" answer stays cached.
Docker Compose port checker
Paste your compose files and find duplicate host ports, plus services exposed to your whole network that probably shouldn't be.