Better software, faster.
Better software, faster.
BESSER is an open-source low-code platform to quickly build all types of (smart) applications. Model once — generate APIs, databases, agents, and full deployments.
Start now — open the editor See our features Star on GitHub
editor.besser-pearl.org
The BESSER online editor — model, generate, deploy. No installation required.
Generates for the stacks you already use
PythonFastAPIDjangoSQLAlchemySQLJavaTerraformPyTorch
What BESSER gives you
A complete low-code toolchain — open, AI-powered, and modular.
From a single model, BESSER produces working software: APIs, databases, full back-ends, AI agents, and deployment manifests.
15+ generators
Databases, REST APIs, web apps, AI agents, deployment manifests — BESSER ships generators for many platforms out of the box.
Details
AI-powered
BESSER combines AI and low-code to accelerate modeling and to generate software systems that embed AI components.
Details
Friendly interface
Use the online editor, create a model from an image, or write a textual description. One UI for each type of user.
Details
Model anything
Class diagrams, state machines, object diagrams, agents, deployment specifications — built-in support for every dimension.
Details
15+ generators
Model once, then generate for many targets. BESSER ships generators for databases, REST APIs, web apps, AI agents, and deployment manifests out of the box. A single model becomes working software across platforms.
- Databases, REST APIs, web apps
- AI agents and deployment manifests
- 15+ targets from one model
- AI-assisted modeling
- Generate software with embedded AI
- Faster from idea to system
- Online visual editor
- Model from an image
- Start from a textual description
- Class, object & state-machine diagrams
- Agents and deployment specs
- Every dimension, built in
AI-powered
BESSER combines AI with low-code to speed up modeling and to generate software that embeds AI components. The AI both helps you build and ends up in what you build.
Friendly interface
Different users, one platform. Work in the online editor, create a model from an image, or start from a plain-text description; each entry point fits a different kind of user.
Model anything
BESSER covers the dimensions a real system needs: class diagrams, state machines, object diagrams, agents, and deployment specifications. All built in, all in one place.
15+ Code generators 53 Peer-reviewed papers 11 Researchers & engineers
2
EU Horizon projects
How it works
Model once. Generate everything.
From a single, simple model — code, infrastructure, AI agents, and deployments fall out the other side.
Model
Describe your whole system once in the web editor — class diagrams, state machines, agents, and deployment specs in a single model.
Generate
Turn that model into working software — REST APIs, databases, back-ends, and AI agents — with 15+ generators for the stacks you already use.
Deploy
Ship straight from the editor with generated deployment manifests. Nothing to install — free forever.
Model
Start your model with drag-and-drop diagramming in the editor, then refine details with forms and structured views. You can also use the chatbot to scaffold entities, relationships, and behaviors from natural-language prompts before polishing the model manually.
Wondering whether BESSER is right for you?
Open the editor and try it in your browser, or talk to us — we love a good problem statement.