HLLMR
One name across software, business systems, music and games. HLLMR Ventures owns it and runs each line as its own division, built and shown working before it is called done.
Four divisions
Each on its own site
- HLLMR TOOLS Software
Useful software, built with purpose.
tools.hllmr.com → - HLLMR UPGRADE Business systems
Your business deserves more than a website.
Request an assessment - HLLMR LIVE Media
HLLMR behind the decks, on camera and on stage.
live.hllmr.com → - HLLMR GAMING
More playing, less fixing.
gaming.hllmr.com →
The register
- Product
Silo
A free, open-source mod manager for Farming Simulator 25.
Stage: Launched - Infrastructure
Self-hosted business stack
The company's own mail, files, documents, automation and recovery, on hardware it controls.
Stage: Launched - Method
Writwall
A governance method for building software with AI agents.
Stage: Launched - Library
Conset
A deterministic parser for construction drawings and specifications.
Stage: Building - Library
Stratum DSP
An audio analysis engine in Rust, published on crates.io.
-
Two economy mods for Farming Simulator 25.
- Tooling
Agent tooling
Small open-source tools for teams running AI agents.
Stage: Launched - Tooling
Curia
A check on AI agents' claims that a change works.
Stage: Building - Product
Stratum
A DJ software platform for library management and set preparation.
Stage: Building - Product
Staqs
Personal finance for people with a day job and a side business.
Stage: Idea
How a venture grows
- 01 · Idea
Start here
An idea gets a line in the register. Nothing more until it earns it.
- 02 · Building
Prove it
It is built and tested in the open, with its limits written down next to its claims.
- 03 · Launched
Its own front door
A launched venture gets its own name, look and address, like silo.hllmr.com.
- 04 · Spun out
Its own company
When it outgrows the house, it can become its own company. The register keeps the link.
Writing · Essay
Document control for AI-assisted development
Twenty years of construction document control, mapped onto building software with AI agents: witnessed tests over accepted claims, plan versus as-built, reasoning as the asset, and a corpus that sheds superseded revisions. All writing →
Get in touch.
A partnership, a project, a booking or a question. One address reaches a person. Founded and run by David Hellmer; background and writing at dhellmer.com.