Irakli Betchvaia

Chief Liberty Evangelist bei @PDV_Bund.

[Irakli Betchvaia @IBetchvaia]

I stopped waiting for the perfect UML tool and just built it myself. 🛠️

Meet kUML – a passion project I’ve been dreaming about for years, built entirely in #Kotlin.

It’s still a work in progress, but the core is rock-solid and the feature set is already bigger than most tools on the market today. If you do UML, SysML, or C4 modeling, this is for you.

Features and roadmap in the reply below! 👇
What's your biggest pain point with current modeling tools?

#BuildInPublic #SoftwareArchitecture

[Irakli Betchvaia @IBetchvaia]

UML. SysML 2. C4. BPMN 2.0.

One DSL. One kuml render. Apache 2.0.

📦 https://t.co/jQKmE6aZMc
🔗 https://t.co/B0rZgPYvHm
#kUML #BPMN #Kotlin #ModelDrivenDevelopment #OpenSource

[Irakli Betchvaia @IBetchvaia]

Plus:

Composite Structure: nested parts + delegation/assembly port connectors fixed
UML Association: role names + multiplicities at both ends
Named-parameter sweep across all DSL examples (LLM-first consistency)

[Irakli Betchvaia @IBetchvaia]

Also in v0.16.0:

C4 LaTeX/TikZ renderer — all 5 diagram types, 6 element types, 10 TikZ styles.

Publication-quality architecture diagrams from .kuml.kts, straight to LaTeX.

[Irakli Betchvaia @IBetchvaia]

The event matrix: 13 definitions × 3 positions × 2 behaviors.

Encoded as a Kotlin type system — not 36 subclasses. BpmnConstraintChecker enforces 7 structural rules at model time, before a single SVG is rendered.

[Irakli Betchvaia @IBetchvaia]

BPMN 2.0 XML import + export — XXE-secure.

Round-trips with Camunda, Flowable, and Zeebe. Bring in existing .bpmn files, edit in DSL, export back. No lock-in.

[Irakli Betchvaia @IBetchvaia]

Collaboration support: Pools, Lanes, and Message Flows.

Model cross-participant processes the way the spec intends — with proper swimlane structure and inter-pool communication, rendered as OMG-compliant SVG.

[Irakli Betchvaia @IBetchvaia]

@BpmnDsl — a type-safe Kotlin DSL for BPMN 2.0.

Tasks, Gateways, Events, Sequence Flows — all modeled in .kuml.kts. No XML editor. No drag-and-drop GUI. Just code that compiles and renders.

[Irakli Betchvaia @IBetchvaia]

🔷 kUML v0.16.0 is out.

BPMN 2.0 is now the fourth first-class modeling language — joining UML, SysML 2, and C4. One Kotlin DSL. One CLI. Four notations.

https://t.co/jQKmE6aZMc

[kUML @kuml_dev]

Not just for Web3.

AUTOSAR systems, safety-critical architectures, regulatory compliance — anywhere model provenance matters, kUML v0.15.0 gives you cryptographic proof.

📦 https://t.co/uAcsXhRoxq
🔗 https://t.co/biLNZEwLnF
#kUML #Blockchain #Ethereum #ModelDrivenDevelopment

[kUML @kuml_dev]

DAP Constitution Showcase — a real decentralized governance constitution modeled as a kUML State Machine, anchored on-chain.

Not a toy. A live example of blockchain-backed model governance that actually runs.

[kUML @kuml_dev]

Multi-Chain Merge Engine.

Govern the same model across multiple chains simultaneously. Conflicting on-chain states? The merge engine resolves them deterministically.

DAP Platform uses this for cross-chain protocol governance.

[kUML @kuml_dev]

kuml chain CLI — full lifecycle:

🔗 connect
🔍 verify
📡 events
✍️ sign
✅ verify-sig
One tool. Any supported chain (EVM / Sui / Aptos).

[kUML @kuml_dev]

EIP-712 signatures on Ethereum.

kuml chain sign produces a typed structured signature that proves author identity at the protocol level — not just "signed by a wallet", but signed over the model hash with full domain separation.

[kUML @kuml_dev]

ModelHasher computes a canonical SHA-256 of any kUML model.

Deterministic. OS-independent. The same model always produces the same hash — whether you're on macOS, Linux, or a CI runner.

No XML round-trips. The .kuml.kts file IS the artifact.

[kUML @kuml_dev]

⛓️ kUML v0.15.0 is out.

First modeling tool with native blockchain integration. Your .kuml.kts architecture files can now be anchored on EVM, Sui, and Aptos — cryptographically, from the terminal.

Architecture that compiles.

https://t.co/uAcsXhRoxq

[Irakli Betchvaia @IBetchvaia]

„Du sollst keine anderen Götter neben mir haben." (2 Mose 20,3)

Die Freikirchen tragen die Freiheit im Namen – doch in der Corona-Zeit fielen viele vor dem Staat nieder wie Israel vor dem goldenen Kalb. Etatismus ist der Götzendienst unserer Zeit.

#Freikirchen #Corona #StaatAlsErsatzgott #GoldenesKalb #EcclesiaLibertasBiblica

https://t.co/lRXN36Grxu

[kUML @kuml_dev]

📖 New handbook page: Showcases → Structurizr Migration.

Walk-through: workspace → kuml import → C4 DSL → honest feature-gap table → render.

Next: https://t.co/uLjtGpIwVF + AUTOSAR ARXML.

#Kotlin #UML #C4Model #Structurizr

[kUML @kuml_dev]

What's locked down by tests:

✅ 19 new tests in StructurizrBigBankPlcShowcaseTest
✅ element counts + relationship coverage
✅ view structure + system identifiers
✅ KumlDslGenerator roundtrip → c4Model { … }, no leftover Structurizr workspace keyword

[kUML @kuml_dev]

What the fixture covers:

🧑 3 personas
📦 4 software systems
🔌 5 containers (Internet Banking System)
🧩 6 components (API Application)
🔗 31 top-level relationships
🖼️ all 4 C4 view types: Landscape · Context · Container · Component

[kUML @kuml_dev]

🏦 kUML v0.14.0 is out.

kuml import --format structurizr now ships with the canonical Simon Brown "Big Bank Plc" workspace as a committed showcase. The most-cited C4 example, parsed and rendered end-to-end.

https://t.co/biLNZEwLnF