Best UML Modeling Software in 2026
Updated
In short: BESSER is ranked #1 of 24 as of 4 October 2026, ahead of Horusec and ArgoUML. The best-ranked option with a free plan is Horusec. The lowest first paid tier on this page is Visual Paradigm at $4/mo.
UML modeling software helps you create and work with models, and the options differ in how they connect modeling with development workflows. Compare UML diagram types, code generation, and reverse engineering, then consider model repository and team collaboration features. Deployment and supported platforms can shape which tools suit your environment. Free-plan availability and paid-from pricing provide additional points of comparison. The ranking opens with BESSER, Horusec, and Umple, followed by ArgoUML and BOUML. Check the listed capabilities against the diagrams you need to work with, whether you require code-related features, and how your team collaborates across its chosen platforms.
24 UML modeling software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
#1 BESSER Top pick · 7.2 Free plan · Free
#2 Horusec Runner-up · 7.1 Free plan · Free
#3 ArgoUML Also great · 7.0 Free plan · Free- Free plan apiLinuxmacOSself-hostedWebWindows
- Free plan
- Yes
- UML diagram types
- class, object, state machine
- Code generation
- Yes
- Team collaboration
- Yes
RecognisedDocumentedFree planPlatforms - Free plan apiextensionLinuxmacOSself-hostedWebWindows
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - Free plan LinuxmacOSWindows
- Free plan
- Yes
- UML diagram types
- class, statechart, activity, use case, collaboration, deployment, sequence
- Code generation
- Yes
- Reverse engineering
- Yes
RecognisedDocumentedFree planPlatforms - Free plan LinuxmacOSWindows
- Free plan
- Yes
- UML diagram types
- use case, sequence, communication, class, composite class, activity, state, object, composite object, component, deployment
- Code generation
- Yes
- Reverse engineering
- Yes
- Team collaboration
- Yes
RecognisedDocumentedFree planPlatforms - Free plan LinuxmacOSWindows
- Free plan
- Yes
- UML diagram types
- Class, component, state machine, interaction, activity, use case, sequence, communication/collaboration
- Code generation
- Yes
- Team collaboration
- Yes
RecognisedDocumentedFree planPlatforms - Free plan LinuxmacOSWindows
- Free plan
- Yes
- UML diagram types
- Class, Component, Action, Sequence, Interaction, State Machine, Use Case, Deployment, Information Flow
- Code generation
- Yes
- Team collaboration
- Yes
RecognisedDocumentedFree planPlatforms - Free plan Web
- Free plan
- Yes
- Paid from
- 4 /user/mo
RecognisedDocumentedFree planPlatforms$4/mofirst paid tier About Visual ParadigmVisit site - LinuxmacOSself-hostedWebWindows
- UML diagram types
- class, state, composite structure, feature, entity-relationship, instance
- Code generation
- Yes
- Team collaboration
- Yes
RecognisedDocumentedFree planPlatforms - Free trial apiLinuxmacOSWindows
- Free plan
- Yes
- UML diagram types
- Class, Use Case, State Machine, Activity, Sequence, Timing, Communication, Component, Deployment, Composite Structure
- Code generation
- Yes
- Reverse engineering
- Yes
- Team collaboration
- Yes
RecognisedDocumentedFree planPlatforms - LinuxmacOSWindows
- Free plan
- Yes
- UML diagram types
- Class, structural, use case, sequence, state chart
- Code generation
- Yes
- Team collaboration
- Yes
RecognisedDocumentedFree planPlatforms -
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - WebWindowsmacOSLinux
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - Free trial Windows
- Free plan
- No
- UML diagram types
- Class, activity, component, communication, composite structure, deployment, interaction overview, object, package, profile, sequence, state machine, timing, use case
- Code generation
- Yes
- Reverse engineering
- Yes
- Team collaboration
- Yes
RecognisedDocumentedFree planPlatforms - WebWindowsmacOSLinux
- UML diagram types
- Class, Object, Package, Component, Composite Structure, Deployment, Profile, Use Case, Activity, State Machine, Sequence, Communication, Timing, Interaction Overview
- Code generation
- Yes
- Reverse engineering
- Yes
RecognisedDocumentedFree planPlatforms - WindowsmacOSLinux
- Free plan
- No
RecognisedDocumentedFree planPlatforms$129/mofirst paid tier About StarUMLVisit site - WebWindowsmacOSLinux
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - WindowsmacOSLinux
- Free plan
- Yes
- UML diagram types
- class, sequence, state, object, use case
RecognisedDocumentedFree planPlatforms - LinuxmacOSWindows
- Free plan
- Yes
- UML diagram types
- UML-B class diagrams; UML-B state-machine diagrams
- Code generation
- Yes
RecognisedDocumentedFree planPlatforms - WebWindowsLinux
- UML diagram types
- Class, activity, object, sequence, state, use case
RecognisedDocumentedFree planPlatforms - WebWindows
- Free plan
- No
- Team collaboration
- Yes
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- Yes
- UML diagram types
- Use Case, Class, Sequence, Activity, Deployment, ER, EER
RecognisedDocumentedFree planPlatforms -
- Free plan
- Yes
- UML diagram types
- class diagrams; use cases; state machines; activities; interaction diagrams; SysML requirements models
- Code generation
- Yes
- Reverse engineering
- Yes
RecognisedDocumentedFree planPlatforms -
- UML diagram types
- Class diagrams; component diagrams
- Code generation
- Yes
- Reverse engineering
- Yes
RecognisedDocumentedFree planPlatforms - WindowsLinux
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms
Is your app on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which UML modeling software is ranked first on Everything Xiaomi?
BESSER is ranked #1 of 24 with a score of 7.2. Horusec is second and ArgoUML third.
How many of these have a free plan?
7 of the 24 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Visual Paradigm has the lowest first paid tier we found: $4/mo.
How is this list ranked?
Ranked on what each maker publishes: documentation depth, a free tier and the platforms it runs on. Paid placements never change a rank.