Setting up the portable version takes less than five minutes. Follow these simple steps to get started: 1. Download the Portable Archive
: You can maintain a consistent GUI layout and language settings across different hardware.
It is a free and open source software (FOSS) under the GNU GPL license, meaning users don't need to worry about restrictive licensing, privacy violations, or dependency on a single company. The QET collection contains a rich library of thousands of symbols, covering electric, logic, pneumatic, hydraulic, and fluid systems, and it continues to grow with each release thanks to an active user community.
If you don't want to carry a physical USB, put the portable folder in your Dropbox or Google Drive. You can then run the software directly from the cloud folder on any synced machine.
: On Windows, run the Lancer QET.bat file to start the application with the correct environment variables. QElectroTech Portable
For the latest downloads and community resources, visit the official website at qelectrotech.org.
The software supports a wide range of formats. You can import .qet and .xml files. For sharing and printing, you can export your entire project or selected parts to multiple image formats (PNG, JPG, BMP, SVG) or to high-quality PDF files.
: Runs entirely from a single folder on a USB stick or external drive.
You might wonder: "Why not just use a web-based electrical CAD tool?" Web tools (like CircuitLab or EasyEDA) require an internet connection. QElectroTech Portable works offline 100% of the time. Setting up the portable version takes less than five minutes
One of QET’s greatest strengths is its extensive built-in symbol library. It includes over for electric, logic, pneumatic, hydraulic, and fluid schematics. This library is continuously updated and improved by the active user community, ensuring you have access to a wide range of modern and standard components.
: As a GNU/GPL licensed software, it is free to use, copy, and redistribute for both personal and industrial projects.
: Unzip the contents to your preferred location, such as a USB flash drive or a synced folder (Dropbox/OneDrive). : Open the folder and run qelectrotech.exe : Create or open your
Whether you are designing a simple home wiring diagram or a complex industrial control panel, QElectroTech Portable puts professional-grade schematic capture in your pocket. It is free, easy to try, and once you experience its freedom, it is hard to go back. It is a free and open source software
For secure industrial projects (defense, automotive, infrastructure), uploading schematics to a third-party cloud server is often a security violation. QElectroTech Portable keeps everything offline and in your physical possession.
If you work across multiple computers—a desktop at the office, a laptop in the field, and a PC at home—keeping your software settings consistent can be a nightmare. With the Portable version, your preferences, custom symbol libraries, and templates stay with you on the USB drive, ensuring the interface behaves exactly the way you expect it to, regardless of the hardware you are using.
is a free, open-source computer-aided design (CAD) application specifically engineered for creating electrical diagrams, industrial schematics, and system blueprints. Distributed under the GNU/GPL license , this tool eliminates licensing constraints, deployment costs, and corporate dependencies for engineers, electricians, and technicians.