Instead of ArgoUML
ArgoUML alternatives
ArgoUML is a free, open-source desktop tool for modeling standard UML 1.4. It covers nine diagram types, supports UML profiles and XMI import and export, and can generate code for Java, C++, C#, PHP4 and PHP5. It also includes Java reverse engineering, OCL constraint modeling and design critics that suggest changes without interrupting the designer. Its Java-based installation is intended for systems with Java 5 or 6, and it runs on Windows, macOS and Linux.
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Sparx Enterprise Architect
by Sparx Enterprise ArchitectFree plan APILinuxMac+3Multi-user business, software and systems modeling — Enterprise Architect adds real-time collaboration and BPMN and SysML alongside a broader UML diagram set than ArgoUML's UML 1.4 focus.
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BridgePoint
Free plan LinuxMacWindowsExecutable model-driven development — BridgePoint adds model simulation, debugging and model compilers for implementation languages, beyond ArgoUML's diagramming and code generation.
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Eclipse Papyrus
Free plan LinuxMacSelf-hosted+2Customizable UML and standards-based modeling — Papyrus covers UML 2.5 and multiple extensions, with optional execution, code-generation, reverse-engineering and documentation tools beyond ArgoUML's UML 1.4 scope.
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Horusec
Free plan APIExtensionLinux+4Static code security analysis — Horusec analyzes code and Git history for security flaws rather than providing UML modeling like ArgoUML.
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kUML
Free plan APILinuxMac+3Kotlin DSL modeling and generated infrastructure — kUML models UML 2.x, SysML 2, C4, BPMN and ERM in a Kotlin DSL and generates infrastructure artifacts beyond ArgoUML's UML 1.4 toolset.
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BOUML
Free plan LinuxMacWindows - 9
AgileUML
Free plan LinuxMacWindows - 10
Gaphor
Free plan LinuxMacWindows - 11
JetUML
Free plan LinuxMacWindows - 12
Modelio
Free plan LinuxSelf-hostedWindows - 13
Violet UML Editor
Free plan LinuxMacWeb+1 - 14
Umple
Free plan LinuxMacSelf-hosted+2 - 15
Astah UML
Free plan LinuxMacWindows - 16
UMLGen
Free plan Web - 17
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PragmaDev Studio
Free plan LinuxMacWindows - 19
Altova UModel
Free trial Windows - 20
objectiF RPM
Free trial APISelf-hostedWeb+1 - 21
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Rodin Platform
Free plan LinuxMacWindows - 23
IBM Rational Software Architect Designer
Paid LinuxMacWindows - 24
IBM Engineering Rhapsody
Paid LinuxWebWindows
A switch may make sense if you need a newer modeling standard, collaboration, model execution, broader generation workflows or a different way to create diagrams. ArgoUML is focused on UML 1.4, while these options range from code-oriented security analysis to low-code application generation. Compare their modeling scope, output, integrations and working environment with what you rely on in ArgoUML. Several alternatives add capabilities such as web collaboration or simulated execution; others are aimed at different tasks altogether, so they are not direct substitutes for UML modeling.