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Alternatives · 2026

The best Astah UML alternatives

The rest of Best UML Modeling Software, in this site's order: each with what it costs, where it runs and its record score.

1
Sparx Enterprise Architect

It suits analysts, designers, architects, developers, testers, project managers, and maintenance staff working with business, software, or systems…

WebWindowsMac+3 $245 one-time Record6.0 Visit
2
BESSER

BESSER suits developers and teams building applications through low-code modeling, including those working with AI components or generated…

WebWindowsMac+3 Free plan Record5.6 Visit
3 WindowsMacLinux+1 $129 one-time Record5.3 Visit
4
UMLet

UMLet suits people who want a free tool for sketching UML diagrams through text-based element editing.

WebWindowsMac+2 Free plan Record5.3 Visit
5
Visual Paradigm

Visual Paradigm suits people and teams creating diagrams or working across modeling, development, agile management, and enterprise architecture.

Web $4 a month, billed yearly Record5.2 Visit
6
Horusec

Horusec suits developers seeking source analysis through a CLI or Visual Studio Code extension, and DevSecOps teams using CI/CD pipelines.

WebWindowsMac+4 Free plan Record5.0 Visit
7
ArgoUML

ArgoUML suits people who need a free desktop tool for UML 1.4 modeling, code generation, or supported Java reverse engineering.

WindowsMacLinux Free plan Record4.9 Visit
8
BridgePoint

BridgePoint suits software and hardware application development and system design.

WindowsMacLinux Free plan Record4.9 Visit
9
Eclipse Papyrus

Papyrus may suit engineering teams or academic users building UML-based models and related diagrams.

WebWindowsMac+2 Free plan Record4.9 Visit
10
kUML

kUML suits developers and modelers who want to define UML and related models in Kotlin and connect modeling with code-generation workflows.

WebWindowsMac+3 Free plan Record4.8 Visit
11 WebWindowsMac+2 Free plan Record4.8 Visit
12 Windows $209 one-time Record4.7 Visit
13
BOUML

BOUML suits developers and modelers who want a free UML toolbox with code generation and reverse-engineering tools.

WindowsMacLinux Free plan Record4.7 Visit
14
Gaphor

Gaphor suits people documenting or visualizing applications and systems with supported modeling standards.

WindowsMacLinux Free plan Record4.7 Visit
15
Modelio

Modelio is for developers, analysts, and software or systems architects working with enterprise, process, or engineering models.

WindowsLinuxSelf-hosted Free plan Record4.7 Visit
16
Violet UML Editor

Violet may suit developers, students, teachers, and authors who need simple UML diagrams.

WebWindowsMac+1 Free plan Record4.7 Visit
17
AgileUML

AgileUML suits software practitioners, academic researchers, and businesses adopting model-driven engineering.

WindowsMacLinux Free plan Record4.6 Visit
18
JetUML

JetUML suits developers, students, and designers who want a focused desktop tool for sketching core UML diagrams.

WindowsMacLinux Free plan Record4.6 Visit
19 WebWindowsAPI+1 — Record4.4 Visit
20
UMLGen

UMLGen suits developers, students, academics, and software architects who need browser-based UML or data-model diagrams.

Web Free plan Record4.0 Visit
21 WindowsMacLinux — Record3.9 Visit
22 WindowsMacLinux Free plan Record3.4 Visit
23 WindowsMacLinux Free plan Record3.2 Visit
24 — Record3.1 Visit