Spectrum Rex - Warehouse Management System

Many years ago I found an interest in logistics, specifically barcode scanners and label printers. After working with different Warehouse Management Systems professionally, I realized they all lacked a key feature: User-friendliness.

The idea of creating a warehouse management system of my own was born.

Let me now introduce: Rex! The open source WMS.

Scroll down for screenshots.

This is Rex. Say hi!


  • Designed for Third-Party Logistics providers.
  • Designed for ease of use.
  • Multi-warehouse support from the start.
  • Multi-level warehouse layouts, including aisles, shelves, cells, carts, and crates.
  • Zones, with the ability of locking goods owners to specific zones.
  • Open API for writing integrations quickly.
  • Mobile app for Android and iOS.
  • First-class support for Zebra, Datalogic, Handheld, and Honeywell terminals with integrated barcode scanners.
  • Batch, serial number, and best-before date management.

Free and open-source software

REX will, as soon as it's ready for an audience, be released as an open-source project under an MIT-style license.

Commercial offering - Rex Cloud

In addition to being open-source, there will be a commercial option for those requiring peace of mind. Including hosting, SLA, backups, and 24/7 support.


Item management, click to zoom.

Teams, click to zoom.

Create order, click to zoom.

Get in touch

Curious about how Rex can help your business?

Don't hesitate to contact me today and we can discuss how to best solve your issues.