From early Scala and infrastructure projects to current AI integrations: accepted contributions, projects of my own and collaboration on debugging. Each entry links to its original source. This selection is neither a complete contribution history nor a client list. Entries are classified by original sources and documented roles, not stars or commit counts.
Five accepted contributions to the Elixir library: Mistral tool calls and usage reporting, Perplexity integration, OpenAI Deep Research, and fixes for streaming and image responses through LiteLLM. Merged between February and September 2025. Contributions to the Elixir implementation, not the Python or JavaScript projects.
ManageSieve support for managing server-side email filtering rules from the command line. The contribution includes configuration, protocol integration with TLS, documentation and tests. Merged on August 24, 2026.
Three accepted contributions to on-device dictation on macOS: loading existing Whisper models from their local folder, correcting clipboard state after failed text insertion, and offering Right Option as a dictation hotkey. Merged on September 17, 2026.
Named persistent sessions for the agent multiplexer: select, list, stop and delete separate runtime namespaces. Merged on April 28, 2026.
Retrieving credit-card transactions through DKKKU/DIKKU: protocol support in HBCI4Java and the corresponding synchronization in Hibiscus. Both contributions were merged on August 31, 2026. Functional banking integration, separate from security reports.
Binding outbound connections to a specific source IP, for example on authorized testing infrastructure. Merged on January 13, 2026. A contribution to the research tool, not a security finding.
Apple Silicon support for the Jameica package in Nixpkgs. Merged on November 6, 2024. macOS packaging work, not a change to Jameica core.
A fix for forwarding cumulative energy readings from EVCC to Victron. Merged on May 28, 2026. A contribution to the integration bridge, not to EVCC or Victron core.
Corrected ARM64 architecture mapping in the installer. Merged on February 4, 2025. A small portability contribution to the asdf plugin, not to kpt itself.
Added a model definition to the existing model registry. Merged on February 13, 2026. A small registry contribution, not development of the model.
Accepted contribution: HandleContext lets internally rewritten HTTP requests re-enter the router. Submitted in 2016, merged on February 10, 2017. Developed to solve a migration problem involving existing URLs.
Accepted contribution: Alpine Linux detection and support for its apk package manager in CFEngine. Merged on December 6, 2012. This source documents the CFEngine upstream contribution, not the separate packaging of CFEngine for Alpine.
Accepted contribution: FreeBSD support for the Go serial library, including tests with ARM cross-compilation. Merged on September 17, 2016.
Accepted contribution: support for Solaris, SmartOS and illumos. The original commit dated December 23, 2018 survives in the project.
Accepted contribution: a path correction in FreeBSD image builds. Merged on November 20, 2016. A contribution to the Crochet image-building tool, not the kernel.
Accepted contribution: build changes for Scala 2.10 and 2.11 in the Cassandra library. Merged on September 20, 2014.
Accepted packaging contributions for Metasploit and THC Amap dated May 17, 2011. The original commits document changes to Homebrew formulae, not development of the security tools themselves.
An Elixir library of my own for AI integration: streaming, tool calling, Deep Research workflows and deterministic test recordings. Application orchestration, not development of the connected models.
Exploratory experiments of my own with additional connections between transformer layers in MLX on Apple Silicon. Documented observations are specific to the evaluated setups; no independent replication or general performance or safety improvement is claimed.
A Scala/Netty NetFlow collector developed by Franz Bettag, with Redis and Cassandra backends and external contributions he merged in 2017 and 2018.
A derivative developed from Foursquare’s Slashem, adding write operations and caching. The work is documented in this project; it does not establish that Foursquare accepted these changes.
A project of my own: a Scala/Netty client for ACME and Let’s Encrypt. Client development, not a claimed role in the Let’s Encrypt project.
Bug report with a maintainer-confirmed fix: a maintainer thanks the reporter and confirms the correction. The thread documents debugging collaboration, not a CVE or a security-vulnerability classification.
Bug report with reproduction and a follow-up test: Franz Bettag supplies a reproducible UDP case and subsequently confirms that the fix works. Not counted as a security finding.
