Free for users

OneHarness

Design IDE for test systems and harnesses

System topology, part selection, pin-level wiring, harness design, rule checks and deliverables in one place — the system-level data layer missing between CAD, EPLAN and Excel.

AT A GLANCEONEHARNESS

Design IDE for test systems and harnesses

01Hierarchical topology02Pin-level wiring03Resource library

Current release v0.4.0 for Windows x64; free for users.

Product videos

Get to know OneHarness in action

Watch an introduction or a walkthrough for real-world workflows.

From topology to deliverables

Hierarchical topology

Design from cabinets down to chassis and boards, with cables grouped into harnesses.

Pin-level wiring

Manage connectors, pins and wires with rule checks.

Resource library

Organize real products, manuals and pinout sources by vendor.

Cabinet layout

Place equipment by rack unit and check weight and power.

Deliverables

Export wiring lists, BOM, project summary and manuals.

Workflow

How OneHarness fits your workflow

01

Build topology

Model the system from cabinets to chassis and boards.

02

Wire interfaces

Connect pins and harnesses, then run design checks.

03

Deliver documentation

Export wiring lists, BOM and project records.

ONEHARNESS / SAMPLE PROJECT

Explore a complete system in one sample project

The sample project uses real vendor products and lets you inspect topology, wiring, cabinet layout and exports. These figures describe the current sample.

25devices
59cables
424wires
0errors, 0 warnings

How design data flows

Start with part selection and finish with structured deliverables, with every step linked inside one project.

01

Resource library

Collect products, connectors, pin definitions and manual sources by vendor and model; share library files.

02

System design

Build cabinets, chassis and boards, wire pins in tables and arrange equipment by rack unit.

03

Check and hand over

Run design rules, locate issues and export wiring lists, a BOM, summary and referenced documents.

COLLABORATION & MAINTENANCE

One project record for every role

System designers

Keep part selection, interfaces, pins and harnesses in one project; recheck and re-export after changes.

Managers and customers

Review topology and project summaries without inspecting every drawing.

Field engineers

Trace a cable to its connectors and pins and use manual references to diagnose wiring issues.

End users

Receive a BOM, master wiring list and manuals for maintenance and future changes.

Open file formats

Projects (.ohproj) auto-save with backups; libraries (.ohlib) can be shared; wiring tables round-trip with Excel.

About file formats →

Equipment vendors

Vendors can list products for free; pinouts are checked against manuals.

Submit products →

OneHarness is free for users

Sign in to get an installer once it is listed in the download center.