An enterprise OutSystems alternative for teams building AI agents, backend orchestration, and composable systems on one execution-first core.


Rierino is an enterprise low-code platform for teams building AI agents, backend orchestration, and composable commerce, PIM, and CMS on a single core — with native multi-LLM agent support and deployment across cloud, hybrid, or on-premises environments. It's positioned as an OutSystems alternative for organizations whose priority is execution-first architecture: AI agents that act on real backend logic, schema-agnostic data models, and the freedom to swap LLMs and infrastructure as needs evolve.
OutSystems is a leading enterprise low-code platform centered on visual application development through its Service Studio IDE, with AI agent capabilities delivered via Agent Workbench for building governed agents within OutSystems applications.
Platform Architecture | Application-first: visual IDE (Service Studio) for full-stack web and mobile apps | Backend-first: APIs, microservices, and agent orchestration as primary surfaces |
|---|---|---|
Platform Scope | Enterprise low-code application development with built-in AI agent tooling | Low-code + AI agents + composable commerce + PIM + CMS + BPM on a single core |
AI Agent Architecture | Agent Workbench for building governed AI agents within OutSystems applications | AI agents as first-class platform components — any API or workflow is an agent tool, plus RAI for in-app AI assistance |
LLM Provider Support | Integrates with major LLM providers through the Agent Workbench | OpenAI, Anthropic, AWS Bedrock, Gemini, Mistral, plus on-prem models (Ollama, LocalAI) swappable per agent |
API & Integration Protocols | REST, SOAP, and pre-built integrations via OutSystems Forge marketplace | Native REST, GraphQL, OData, SOAP, Websocket, Kafka, event streaming |
Extensibility for Developers | Integration Studio + SDK for custom C#/.NET extensions, distributed via OutSystems Forge | Decoupled Java SDK, integrate microservices in any language, JavaScript or Groovy for custom scripts |
Multi-LLM and local model support — swap providers as the AI landscape evolves
Low-code, AI agents, commerce, PIM, and CMS on one core — fewer tools, fewer integrations
Cloud, hybrid, or on-premises — across Windows, Linux, Unix, or macOS, no trade-offs
Flat annual licensing independent of users or volume — costs that don't scale with adoption

Deployment Options | OutSystems Cloud (default) or self-managed, runtime requires Windows Server + IIS | Cloud, hybrid, or on-premises; AWS, Azure, GCP, Oracle, Huawei, and more; VMs, Kubernetes, Docker, bare-metal |
|---|---|---|
Process Orchestration | Workflow and BPM capabilities within the application development scope | Saga flows — event-driven, stateful workflows across services, with custom logic and compensations |
Data Model | Application Object (AO) model within the OutSystems framework | Schema-agnostic — configurable models for products, content, processes, and agents |
Free/Entry-Level Edition | OutSystems Personal Edition — free, up to 100 users, includes Agent Workbench access | Rierino Community Edition — full-featured, unlimited users, via AWS Marketplace |
Pricing Model | Subscription scales with Application Objects, user packs, and add-ons for runtimes or compliance | Flat annual license, independent of users or volume; scoped to module selection |
OutSystems is a strong choice for teams building UI-led web and mobile business applications primarily in Microsoft-aligned environments. For teams whose center of gravity is backend execution, with AI agents acting on real systems, low-code orchestration across the enterprise stack, and the freedom to deploy on any infrastructure, Rierino is the better fit. It's the execution-first foundation for enterprises building agentic, composable systems at scale.

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