All-in-one Mail & Collaboration server. Secure, scalable and fluent in every protocol (IMAP, JMAP, SMTP, CalDAV, CardDAV, WebDAV).

Frame profiler

An open-source, code-first Go toolkit for building, evaluating, and deploying sophisticated AI agents with flexibility and control.

A fast, zero-copy EDN (Extensible Data Notation) reader written in C11 with SIMD acceleration.

A system-level, binary package and environment manager running on all major operating systems and platforms.

A cheatsheet for the Python Debugger (pdb)

A local-first personal finance app

Actual's server

🦝 Rachoon — A self-hostable way to handle invoices

Open-source AI agents for penetration testing

AWS MCP Servers — helping you get the most out of AWS, wherever you use MCP.

Open-source platform to build and deploy AI agent workflows.

Kirby's core application folder

Sell stuff and see what sticks

A self hosted virtual browser that runs in docker and uses WebRTC.

Useful scripts for WinDbg using the debugger data model

My development workspace

an open source, extensible AI agent that goes beyond code suggestions - install, execute, edit, and test with any LLM

Archive of bytepack.io

A framework for processing email using worker plugins.

Truly independent web browser

Elixir IMAP client

ABNF in, parser out

✨ Magical shell history

Parallel Virtual Cluster - A KVM/Zookeeper/Ceph-based hyperconverged infrastructure manager

Provides a .NET wrapper for the Windows Task Scheduler. It aggregates the multiple versions, provides an editor and allows for localization.

A set of .NET libraries for Windows implementing PInvoke calls to many native Windows APIs with supporting wrappers.

12 Lessons to Get Started Building AI Agents

The AI coding agent built for the terminal.

Production-ready platform for agentic workflow development.