Downloads

Downloads explains which file to pick. All downloads are free, need no registration, and come from the project's GitHub pages.

Commander4j

Open the latest Commander4j release on GitHub. Scroll down to the heading Assets and click the file that matches your computer. The version number in the file name changes with each release; everything else stays the same.

Your computer	File to click	Size
Windows 10 or 11 (nearly everyone)	Commander4j_version_windows-x64_with_jre.exe	about 200 MB
Windows on ARM (Snapdragon laptops)	Commander4j_version_windows-arm64_with_jre.exe	about 160 MB
Mac with an Apple chip (M1, M2, M3, M4)	Commander4j_version_apple_silicon_with_jre.dmg	about 140 MB
Mac with an Intel processor	Commander4j_version_apple_intel_with_jre.dmg	about 140 MB
Linux	Commander4j_version_linux.sh (the Java 25 JDK must already be installed)	about 100 MB

The files are large because each one includes its own copy of Java. You do not need to install Java separately on Windows or macOS.

Not sure which Mac you have? Click the Apple menu, then About This Mac. If it says Chip: Apple M… choose Apple silicon. If it says Processor: Intel… choose Intel.

Ignore the two other files in the list unless you are setting up a server: c4j_commander4j_web.war is the scanner web application, deployed on an Apache Tomcat 11 server with a Java 25 JDK (see Installation), and updates.xml is used by the built-in update check.

The website has the same choices as buttons that always point at the newest release: commander4j.com/download.html.

Companion applications

Only needed when you connect Commander4j to an ERP or drive automatic labellers. They normally live on a server. Each release page lists the same five file types as above.

Application	What it does	Download	Install guide
Middleware4j	Converts and routes files between your ERP and Commander4j	Latest release	Installation Middleware4j
LabelServer4j	Sends label data to case and secondary labellers	Latest release	Installation LabelServer4j
AutoLab4j	Automatic pallet labelling triggered by the line	Latest release	Installation AutoLab4j

Tools and utilities

Name	Description
ZPL-Renderer	Renders Zebra ZPL label commands on screen; emulates a Zebra printer
LogoRenderer	Renders Logopak label templates and emulates a labeller for testing
LogoClient	Client for developing against LogoRenderer and Logopak labellers
SocketTest	TCP/IP client and server for device communication and debugging
ModbusBridge	Relays values between Modbus devices
ModbusClient	View and change values on a Modbus server
ModbusServer	Run a Modbus server for testing
sftpTransfer	Send and receive files over SFTP automatically
SFTP Get	Collect files from an SFTP server automatically
SFTP Send	Send files to an SFTP server automatically
XML-Viewer	View XML documents
Menu4j	Tree menu for launching applications and scripts
TreeDoc	Document a folder structure as plain text
LaunchPad	macOS application launcher that replaces Launchpad
All projects	Every repository on GitHub

Next step: Install Database (or Install Commander4j on a Workstation PC that will use a database on a server).