The controller: zones, clients, and sources from AirPlay, Spotify and Subsonic, exposed over MQTT and KNX.
Debian package · Deployment files · KNX product database · Linux arm64 · Linux x86_64 · Windows · macOS arm64 · macOS installer · macOS x86_64
Open source · Fabian Schmieder
Audio, buildings, and machines from the nineties.
27 public projects, 25 with releases you can install. SnapDog and AROS have their own sites.
A complete multiroom audio system: a controller, a receiver OS for the Raspberry Pi, and an installer to put it on a card.
Join the beta onTestFlightSnapDog Client for iPhone, iPad, and Mac
A Raspberry Pi boots straight into a SnapDog receiver, nothing else installed.
Disk image · Other
Write a SnapDog OS image to an SD card from a desktop application.
Linux arm64 · Linux x86_64 · Windows · macOS installer
Audio building blocks
The protocol layer under SnapDog, published separately because it is useful on its own.
A Snapcast server and client rewritten in Rust, wire-compatible with the original.
Linux arm64 · Linux x86_64 · Windows · macOS arm64 · macOS x86_64
AirPlay 1 and 2 receiver as a library, so an application can accept audio and video without a daemon.
A modern engineering layer around the AROS operating system: source kept in sync with upstream, cross-toolchains built the same way twice, and one command line for the whole loop.
source-chromium-zlib-da752eb2In development
An AROS fork kept in sync with upstream, so compatibility work stays reviewable and can go back.
Source archive
v0.6.0In development
One typed command line for AROS work: fetch the source, build it, verify it, talk to a board.
Debian package · Linux arm64 · Linux x86_64 · Other · macOS arm64
v0.1.4Preview
Cross-compilers built the same way twice, shipped with checksums, SBOMs and provenance.
Linux arm64 · Linux x86_64 · Other · macOS arm64
Amiga
Filesystems, emulation and cross-compilers for the Amiga and the systems that grew from it.
In development
An Amiga emulator in Rust, running on the desktop today and aimed at an ESP32-P4 handheld.
Rust
Read, write, check and mount Amiga PFS3 volumes on a modern machine.
Debian package · Linux arm64 · Linux x86_64 · macOS arm64 · macOS x86_64
Cross-compile Rust applications for the AROS x86-64 ABI-v1 from macOS or Linux with the native SDK.
Other
A successor to PFS3 with checksums, copy-on-write and B+tree directories, for AmigaOS and AROS.
Amiga archive · Source archive
A GCC 15 cross-compiler for MorphOS, built and signed for every SDK release and installed with one command.
Debian package · Deployment files · Linux arm64 · Linux x86_64 · Source archive · macOS arm64
An independently maintained FreeBASIC compiler on a CMake build, released for six native hosts at once and smoke-tested on each of them before publication.
Debian package · Linux arm64 · Linux x86_64 · Source archive · Windows arm64 · Windows x86_64
Smart home and buildings
KNX tooling and centrally managed room displays.
A KNX stack that runs on a server and on a microcontroller, with no platform assumptions in the protocol layer.
Source archive
Monitor KNXnet/IP from one shared daemon, with terminal, desktop, REST and MCP interfaces.
Debian package · Linux arm64 · Linux x86_64 · Other · Source archive · Windows · macOS arm64
Render room content once and drive every E-Paper and colour display from one place, including over-the-air updates.
Deployment files
Embedded and hardware
Firmware, bridges and code generation for microcontrollers.
Turn PNG artwork into LVGL C arrays without leaving the build.
Debian package · Linux arm64 · Linux x86_64 · Windows · macOS arm64 · macOS x86_64
A console over I2C for boards where the UART is already spoken for, bridged to USB-CDC.
Firmware
Documentation
How the Korg Kronos works inside, written down while replacing its NKS4 panel board with an ESP32-P4.
Developer tools
Command line programs for machines and hardware you have to talk to.
Drive a UGREEN NAS from a script instead of clicking through its web interface.
Debian package · Linux arm64 · Linux x86_64 · Windows · macOS arm64 · macOS x86_64
A serial terminal that keeps every byte in SQLite, reachable as a TUI, a GUI, over REST and over MCP.
Debian package · Linux arm64 · Linux x86_64 · Other · Windows · macOS · macOS arm64 · macOS x86_64
Everyday tools
Programs for the work around the work: labels, sheet music, and an assistant that can see a calendar.
Put a USB-only Brother label printer on the network, discoverable and queryable.
Debian package · Linux arm64 · Linux armv7 · Linux x86_64 · macOS arm64 · macOS x86_64
Get MuseScore sheet music out as vector PDF instead of a screenshot.
Linux arm64 · Linux x86_64 · Other · Windows · macOS arm64 · macOS x86_64
Give an assistant access to mail, calendar and tasks across MS365, iCloud, Gmail and plain IMAP.
Linux arm64 · Linux x86_64 · MCP bundle · Windows arm64 · Windows x86_64 · macOS
Legal and compliance
Software for legal research and regulated reporting duties.
Search German, Austrian and EU legal sources from an assistant, with typed results instead of prose.
MCP bundle · Source archive
A guided reporting portal that produces a filed IT security incident report, classified to ENISA RSIT and assessed against GDPR Article 33.