Eonest Lab
One workbench for system design, simulation and engineering records.
Draw a system, simulate it, check it against requirements and write it up, in one calm desktop app that keeps your projects on your machine.
Free. Downloads open in the next few days.
Design systems on a canvas
Build electrical, mechanical, thermal, fluid and control systems from the Modelica Standard Library. The diagram is the model: wires, parameters and units are checked as you draw, and you never have to write Modelica by hand.
Simulate and compare runs
Simulate with OpenModelica, plot any variable, sweep parameters and keep each run with the exact values that produced it. When an input changes, results say they're out of date and what a rerun will cost.
Pages that stay true
Engineering pages mix text, live parameters, tables, plots and Python or Julia cells. Values come from the model and the latest run, so the report is never a stale copy.
An assistant inside the work
Ask about the selection, a run or a requirement. The assistant proposes edits you review before they land. Use your own provider or local models with Ollama; a privacy profile per conversation decides what the model may see.
For companies that keep AI on a short leash
Private by default, enforceable by IT
Local models
Run the assistant and the privacy scan on Ollama, entirely on the engineer's computer. Nothing leaves it.
A guard on every outbound request
When a cloud model is allowed, names, numbers and trade secrets are replaced with placeholders before a request is sent, and the answer comes back in your real words.
Managed settings
IT can lock providers, profiles and features across the company, and review an outbound log of what was sent and where.
System requirements
Eonest Lab installs OpenModelica, local AI and Julia for you from their official sources, checked against published checksums. Updates download in the background and install when you restart.
- macOS
- macOS 12 or later, Apple silicon
- Windows
- Windows 10 or 11, x64
- Linux
- x86-64, as a .deb package or an AppImage
Try it on your next design
Free for individuals. Team plans are on the way.









