CABELIO
Free to use

Design wire harnesses in minutes, not weeks

Cabelio is a free, modern harness design tool with built-in quoting, approvals, and manufacturing.

A modern alternative to SolidWorks, Zuken, RapidHarness, and Altium.

ECU ControllerPWRSIGDATAMotor DriverPWRSIGSensor ArrayDATAGND
How It Works

From idea to manufactured harness

Create Harness

Start a new harness project in seconds

Add Connectors & Pins

Define connectors and map wire pins visually

Bundle Components

Add overwrap, heatshrink, and labels

Notes & Approval

Add build notes and request team approval

Quote & Order

Get instant pricing and order manufacturing

Intuitive pin mapping, finally

  • Visual node-based interface for connecting pins
  • Drag-and-connect wiring with zero learning curve
  • Real-time validation catches errors instantly
Pin mapping demo

Define real-world builds visually

  • Overwrap, heatshrink, zip ties, all built in
  • Labels and wire grouping match physical builds
  • Matches real manufacturing specifications
Harness bundling demo

A library that actually helps

  • Pre-approved connectors, wires, and cables
  • Add your own parts anytime, fully customizable
  • No vendor lock-in, use what you need
Component library demo

Capture tribal knowledge

  • Reusable build notes for consistent manufacturing
  • Interactive instructions your team can follow
  • All team knowledge centralized in one place
Build notes demo

Built for real teams

  • Lock designs after approval for production compliance
  • Track revisions automatically with full history
  • Organization-level workflows and permissions
Approvals workflow demo

From design to quote instantly

  • Three tiers to choose from, as fast as 4 days
  • No back-and-forth emails, instant pricing
  • Direct path from design to manufacturing
Instant quoting demo
Why Cabelio

The modern alternative

Legacy ToolsCabelio
Expensive licensesFree
Weeks to designMinutes
Hard to learnIntuitive
No quotingInstant quotes
Static workflowsInteractive
See It In Action

Product walkthrough

Pin mapping walkthrough video
Built For

Teams that build real hardware

Hardware Startups

Ship your first prototype without CAD overhead

Aerospace & Defense

Engineering-grade workflows for critical systems

Robotics Companies

Iterate harness designs as fast as your firmware

Individual Engineers

Professional tooling without the enterprise price tag

Free today. Scales with you tomorrow.

Design is free forever
Pay only for manufacturing
Advanced outputs (formboards, cut tables) coming soon

Trusted by engineering teams

“We cut our harness design time from two weeks to an afternoon.”

Lead EE, Hardware Startup

“Finally, a tool that doesn't require a week of training just to draw a wire.”

Systems Engineer, Aerospace

“The instant quoting alone saved us dozens of email chains per project.”

Founder, Robotics Company

Start designing your first harness in minutes

No credit card required. Free forever.