proven architecture based on
mainstream open-source technologies
Framework:
Enterprise Application Development Has New Requirements
AI has changed how enterprise applications are built, but it hasn't changed what businesses expect from them. Applications still need to be secure, scalable, maintainable, easy to evolve over time, while preserving the ability to be changed "on the fly" without coding.
That's why choosing an alternative to OutSystems is no longer just about visual development or low-code features. It's about finding a platform that fits your architecture, your development team, and the way you plan to use AI.
When comparing platforms, consider:
- Runtime AI Tools
- Local and public LLMs
- Source code ownership
- Long-term licensing costs
- No vendor lock-in
- Scalability for enterprise workloads
- Java and Spring Boot foundation
Two Different Engineering Strategies
Decision Criteria
Engineering philosophy
Productivity model
Digital asset
Long-term strategy
Professional engineering with AI-assisted productivity
AI + Studio + Governed Runtime Customization
Standard Spring Boot application
User owns the application and the source code
Replace traditional development with visual low-code
Visual low-code platform
Proprietary application model
Platform owns the application and the source code
Professional Engineering
Comparison Criteria
Engineering model
Development environment
AI collaboration
Engineering workflow
Architecture ownership
Learning investment
Professional Java development
IntelliJ IDEA + Java and Spring ecosystem
AI works directly with source code
Git, Maven/Gradle, CI/CD
Developers own the architecture
Existing Java skills
Visual low-code development
OutSystems IDE
AI works within platform models
Platform-specific lifecycle
Architecture follows platform conventions
Platform-specific skills
Engineering Productivity
Comparison Criteria
AI-assisted development
Visual productivity
Runtime Customization
Change ownership
Release frequency
Productivity strategy
Generate, review and refactor Java code
Studio accelerates repetitive engineering
Business users adapt selected application behavior after deployment
Developers own architecture; users own configuration
Many business changes don't require application releases
Accelerate engineering without replacing it
Assist visual development
Visual modeling is primary
Changes typically flow through low-code development lifecycle
Developers and business technologists work in one platform
Changes usually follow deployment lifecycle
Replace engineering with visual abstraction where possible
Engineering Freedom
Comparison Criteria
Application architecture
Custom business logic
Technology ecosystem
Integration strategy
Refactoring
Future technology
Standard Spring Boot architecture
Unlimited Java customization
Entire Java and Spring ecosystem
Standard APIs, libraries and protocols
Standard engineering practices
Adopt new Java technologies independently
Platform-specific architecture
Platform extensions
Platform ecosystem
Connectors plus platform APIs
Platform evolution
Depends on platform roadmap
Enterprise Platform
Comparison Criteria
Standardization
Governance
Reuse
Team onboarding
Enterprise operations
Organizational scalability
Common engineering foundation
Engineering guardrails + runtime boundaries
Shared modules and business capabilities
Familiar Java ecosystem
Standard Java operations
Supports platform engineering
Platform-wide standards
Platform lifecycle governance
Shared platform assets
Platform onboarding
Platform-specific operations
Supports centralized low-code governance
Technology Ownership
Comparison Criteria
Source code ownership
Runtime licensing
Vendor dependency
Infrastructure freedom
Hiring strategy
Exit strategy
Full ownership of standard Java applications
No runtime fees
Open-source foundation
Deploy wherever Spring Boot runs
Millions of Java developers
Continue evolving as a Java application
Application tied to platform artifacts
Runtime licensing
Proprietary platform
Platform-supported deployment
OutSystems specialists
Migration is a major project
Business Outcomes
Comparison Criteria
Time-to-market
Development cost
Business agility
Technology risk
Team scalability
Total cost of ownership
Faster delivery through AI and engineering automation
Smaller productive engineering teams
Runtime customization reduces release dependency
Standard Java reduces long-term risk
Existing Java talent
No runtime licensing + technology independence
Faster delivery through visual development
Reduced coding effort
Rapid changes through low-code
Higher dependency on vendor roadmap
Platform expertise required
Platform licensing throughout lifecycle
About Jmix
Jmix is an open-source Java platform for enterprise software development with local and public AI models.
Unlike proprietary platforms, Jmix gives teams full control over application architecture, source code, deployment, and future evolution.
Applications remain yours: not tied to a vendor-specific runtime or licensing model.
By combining visual development tools, enterprise-grade Java technologies, and AI-assisted development, Jmix helps teams build and evolve enterprise applications without the limitations of proprietary low-code platforms.
Studio:
IDE-based visual development tools
Marketplace:
out-of-the-box add-ons for typical
business tasks
business tasks
10 years
Est. 2016
International
Offices in the UK, Europe and worldwide
Used in
170+ countries
400+
enterprise projects completed
Millions
of end-users
25,000+
Java developers build apps with Jmix
AI Works Better with Full-Code Applications
Jmix: The Trusted Choice of Developers Worldwide
Many leading companies worldwide have chosen Jmix for its AI-assisted development capabilities,
enterprise-grade flexibility, and open architecture. It gives development teams full control over their
applications while avoiding vendor lock-in.
Why Businesses and Developers
Prefer Jmix to Outsystems
- 01AI AssistantUnlike OutSystems, Jmix combines AI assistance with open-source Java development, helping developers generate code in the app context, explore APIs and accelerate delivery while keeping full control over the application.
- 02Vendor IndependenceWith Jmix, you are not tied to any single vendor. You can choose any hosting option, whether on-premise, cloud, or hybrid, reducing the risk of vendor lock-in that is often associated with proprietary platforms like OutSystems.
- 03Open SourceJmix gives development teams full access to the application source code, offering greater freedom to customise, extend and maintain applications than a proprietary platform such as OutSystems.
- 04Java and Spring foundationInstead of platform-specific expertise, Jmix relies on mainstream Java and Spring technologies that simplify hiring, onboarding, and long-term application maintenance.
- 05Low-code tools for power usersWith Jmix, power users and analysts can customize business applications in runtime using conversational UX without coding. Later developers can scan the changes against the code base and transform it into the Java code that belongs to you.
- 06Customization and FlexibilityJmix offers highly customizable solutions, enabling developers to tailor applications to exact requirements. Unlike OutSystems, which has limited customization options, Jmix provides full access to the source code for ultimate flexibility.
- 07Cost EfficiencyJmix is significantly more economical. It charges only for developer licenses, making it ten times cheaper than traditional low-code platforms. OutSystems’ subscription-based model can lead to higher costs, especially for larger or prolonged projects.
- 08Security by designBuild AI-enabled apps on top of governed data access and platform-level security controls integrated with enterprise identity service providers.
- 09Easy Team IntegrationJmix is accessible even to junior Java developers. Familiar Java and Spring technologies, visual tools, and the built-in AI Assistant help teams get up to speed in less than two weeks, without having to master the proprietary OutSystems environment.
- 10Wide Range of SolutionsJmix supports a wide range of enterprise IT needs, from building systems and integrating services to automating processes and modernising applications with AI-assisted development. Jmix excels in:
- Enterprise SoftwareCreate applications with extensive data models, access control, and business logic.
- Business Process AutomationIntegrate BPM engines seamlessly into your app’s UI and logic.
- Legacy System ModernizationModernize systems with a unified backend and frontend language.
- Admin PanelsManage data and automate customer interactions effectively.
- ERP ExtensionExtend SAP, Oracle EBS, Infor ERP without touching the core.
- Data ApplicationsQuickly build or reverse-engineer fully functional CRUD apps with advanced data features.
-
Compare Jmix with
other application development platforms
Ready to try Jmix?
Frequently Asked Questions
OutSystems and Jmix are application development platforms used to build and deploy enterprise software. OutSystems is a proprietary low-code platform focused on visual development and rapid application delivery.
Jmix is an open-source Java platform for enterprise software development with local and public AI models. It combines Java and Spring technologies, visual development tools, AI-assisted development, and full access to the application source code.
The right choice depends on your development approach. OutSystems is suitable for teams that prioritise visual low-code development and want to minimise hand-coding within a proprietary platform.
Jmix is better suited to Java teams that need greater customisation, architectural flexibility, AI-assisted development, and full control over the source code. Its visual tools, reusable components, and AI Assistant also help accelerate delivery.
Jmix is open source and based on standard Java and Spring technologies. Development teams retain access to the application source code and can modify, extend, deploy, and maintain their applications independently.
Jmix applications can run on-premises, in the cloud, or in hybrid environments. OutSystems is a proprietary platform, so applications remain more closely connected to its tools, runtime environment, ecosystem, and licensing model.
Jmix can be more economical, particularly for large or long-running projects. Its commercial plans are based primarily on developer subscriptions rather than the number of application users or runtime usage, making long-term costs easier to predict.
OutSystems uses a commercial subscription model, and costs may increase as the number of applications, users, or required platform resources grows.
Both platforms provide AI capabilities, but they follow different approaches. OutSystems delivers AI-assisted features within its proprietary low-code ecosystem.
Jmix brings AI assistance into standard Java development workflows. Its AI Assistant and support for coding agents help developers work with application code, generate functionality, navigate the framework, and automate routine tasks while retaining control over the architecture and source code.
Yes. Jmix applications can use public AI services as well as locally deployed models. This allows organisations to select models according to their security, infrastructure, performance, and data-processing requirements.
Local models can be used in restricted or on-premises environments, while public models can support cloud-based AI scenarios. In both cases, AI works within the application’s existing roles, access rules, and business logic.
