Kai A. Hartung
Flowise
The open-source low-code tool for developers to build customized LLM orchestration flows and AI Agents using JavaScript/Node.js.
LangFlow
The Python-native visual IDE for building AI Agents and RAG pipelines. Drag-and-drop interface for LangChain.
OpenCode
The 'Terminal Renaissance' for sovereign development. An open-source AI coding agent that integrates with your local environment and LSP.
Thunderbird
The open-source standard for email, calendar, and contacts. Revitalized with the 'Supernova' interface and built for privacy and ownership.
Dark Reader
An open-source browser extension that intelligently inverts website colors to provide a comfortable dark theme, reducing eye strain and improving accessibility.
IndustryFusion
An open-source, manufacturer-driven operating system for the smart factory. Enables digital sovereignty and interoperability in industrial environments.
Paperless-ngx
A free and open-source document management system that transforms your paper and digital chaos into a smart, searchable archive with AI automation.
BentoPDF
A 100% client-side, secure, and open-source alternative to iLovePDF. Process confidential documents without them ever leaving your browser.
Umami
A simple, fast, privacy-focused alternative to Google Analytics. Cookieless tracking means 100% data accuracy without consent banners.
AnythingLLM
The all-in-one desktop AI application for RAG, AI Agents, and No-Code automation. Run LLMs locally with full data privacy.
Podman AI Lab
A free extension for Podman Desktop that streamlines local AI sandbox creation, offering a secure, daemonless environment for AI/ML development.
Docling
A smart open-source toolkit for parsing complex documents (PDF, DOCX, HTML) into structured JSON/Markdown, optimized for Generative AI and RAG pipelines.
Meetily
An open-source, privacy-first AI meeting assistant that runs locally. Captures and summarizes meetings without sending audio to the cloud.
Cal.com
The open-source scheduling infrastructure for everyone. A customizable, white-label-ready alternative to Calendly.
AppFlowy
An open-source Notion alternative with a focus on local-first and privacy, built with Rust and Flutter. Currently facing significant stability and performance challenges.
Jitsi Meet
Secure, open-source video conferencing solution for web and mobile. Self-hostable, end-to-end encrypted, and highly scalable.