larsp's notes

Web software developer and consultant from Germany. I build and operate web applications with Ruby on Rails and telephony systems with FreeSWITCH and Asterisk.

This is my digital garden — a collection of notes, learnings, and tools I find useful. Have a look at the posts or read more about me .

Social Links:

Recent Posts

AI/LLM Resources
Updated: 19 Apr, 2026
- Resources
- AI
A curated collection of artificial intelligence and large language model resources, including Claude Code tools, plugins, MCP servers, spec-driven workflows and Ruby/Rails AI frameworks.
IMAP migration and backup
5 Feb, 2026
- Tools
Notes on moving mail between servers and keeping local backups. The article covers two primary tools: imapsync for server-to-server migration and imap-backup for offline archiving.
Open Source Software
21 Jan, 2026
- Software
A curated collection of excellent open source web applications organized by category, including tools for chat, content management, development, document handling, home automation, hosting, email, project management, and task tracking.
Ruby on Rails resources
21 Jan, 2026
- Ruby on Rails
- Resources
A comprehensive link directory and continually updated notes for Ruby on Rails development, covering admin interfaces, APIs, authentication, caching, databases, testing, and more.