Network utility for inspecting IPv4/IPv6 CIDR blocks. Shows first/last IPs or exports full IP lists as JSON.
Full-featured CLI for Toggl Track. Start/stop timers, manage entries, generate reports, and validate German work law (ArbZG) compliance.
My personal website.
Interactive DevOps training platform. Break and repair clusters, fix failing nodes, roll back deploys, rotate tokens, and recover from outages in cloud-hypervisor VMs.
Interactive advent calendar covering the OWASP Top 10 for LLM Applications 2025. Progressively unlocking doors teach security vulnerabilities through hands-on learning.
Multi-language library for parsing human-readable time expressions. Supports relative times, weekdays, dates, and combined expressions in English and German.