Best UML Modeling Software in 2026
Updated
In short: BESSER is ranked #1 of 24 as of 4 October 2026, ahead of Horusec and Astah Professional. 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 can support diagramming, model management and connections between designs and development workflows. As you compare options, look at UML diagram types alongside code generation and reverse engineering, then weigh model repositories and team collaboration against deployment and platform needs. Free-plan availability and starting paid prices add practical constraints. The ranking begins with BESSER and Horusec, followed by Astah Professional and Sparx Enterprise Architect; Visual Paradigm, ArgoUML, BridgePoint and BOUML also appear among the first entries. Consider which modeling tasks your team needs to handle and how closely those tasks should connect to code and shared models.
24 UML modeling software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
| # | Platform | Score | Why | From | Free plan | Paid from | UML diagram types | |
|---|---|---|---|---|---|---|---|---|
| 1 |  BESSER | 7.3 | RecognisedAPIDocumented | Free | Yes | — | class, object, state machine | View |
| 2 |  Horusec | 7.2 | RecognisedAPIDocumented | Free | Yes | — | — | View |
| 3 | Astah Professional | 6.7 | RecognisedAPIDocumented | — | Yes | — | Class, Use Case, State Machine, Activity, Sequence, Timing, Communication, Component, Deployment, Composite Structure | View |
| 4 | Sparx Enterprise Architect | 6.0 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 5 |  Visual Paradigm | 6.0 | RecognisedAPIDocumented | $4/mo | Yes | 4 /user/mo | — | View |
| 6 |  ArgoUML | 5.9 | RecognisedAPIDocumented | Free | Yes | — | class, statechart, activity, use case, collaboration, deployment, sequence | View |
| 7 | BridgePoint | 5.9 | RecognisedAPIDocumented | Free | Yes | — | Class, component, state machine, interaction, activity, use case, sequence, communication/collaboration | View |
| 8 |  BOUML | 5.8 | RecognisedAPIDocumented | Free | Yes | — | use case, sequence, communication, class, composite class, activity, state, object, composite object, component, deployment | View |
| 9 |  Gaphor | 5.8 | RecognisedAPIDocumented | Free | Yes | — | Class, Component, Action, Sequence, Interaction, State Machine, Use Case, Deployment, Information Flow | View |
| 10 |  Umple | 5.8 | RecognisedAPIDocumented | — | — | — | class, state, composite structure, feature, entity-relationship, instance | View |
| 11 | PragmaDev Studio | 5.7 | RecognisedAPIDocumented | — | Yes | — | Class, structural, use case, sequence, state chart | View |
| 12 |  AgileUML | 5.5 | RecognisedAPIDocumented | — | Yes | — | class diagrams; use cases; state machines; activities; interaction diagrams; SysML requirements models | View |
| 13 |  UMLet | 5.5 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 14 |  JetUML | 5.4 | RecognisedAPIDocumented | — | Yes | — | class, sequence, state, object, use case | View |
| 15 | Rodin Platform | 5.4 | RecognisedAPIDocumented | — | Yes | — | UML-B class diagrams; UML-B state-machine diagrams | View |
| 16 |  UMLGen | 5.4 | RecognisedAPIDocumented | — | Yes | — | Use Case, Class, Sequence, Activity, Deployment, ER, EER | View |
| 17 | Eclipse Papyrus | 5.3 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 18 |  Modelio | 5.2 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 19 | Altova UModel | 5.1 | RecognisedAPIDocumented | — | No | — | Class, activity, component, communication, composite structure, deployment, interaction overview, object, package, profile, sequence, state machine, timing, use case | View |
| 20 |  kUML | 5.1 | RecognisedAPIDocumented | — | — | — | Class, Object, Package, Component, Composite Structure, Deployment, Profile, Use Case, Activity, State Machine, Sequence, Communication, Timing, Interaction Overview | View |
| 21 |  UML Lab | 5.1 | RecognisedAPIDocumented | — | — | — | Class diagrams; component diagrams | View |
| 22 |  StarUML | 5.0 | RecognisedAPIDocumented | $129/mo | No | — | — | View |
| 23 |  Violet UML Editor | 5.0 | RecognisedAPIDocumented | — | — | — | Class, activity, object, sequence, state, use case | View |
| 24 |  objectiF RPM | 4.9 | RecognisedAPIDocumented | — | No | — | — | View |
Is your platform 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 Inferse?
BESSER is ranked #1 of 24 with a score of 7.3. Horusec is second and Astah Professional 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, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it. Paid placements never change a rank.