OutSystems & Mendix alternative

Enterprise speed.
Without enterprise lock-in.

OutSystems and Mendix start at $36K+/year and trap your apps in a proprietary runtime. Weezzi gives you AI-native generation, real ownership of standard Java / Python / JavaScript code, and free self-hosting on Docker or Kubernetes.

€24K Weezzi enterprise
license starts at
$36K+ OutSystems / Mendix
typical floor
100% Standard code
you actually own
€0 Self-host forever
Docker / K8s
The comparison

Six dimensions. One honest table.

We're not the fastest first-prototype tool — we're the platform that turns enterprise low-code into something you can actually own and operate after the demo.

← swipe to compare →

  Weezzi AI-NATIVE · OWNED CODE OutSystems PROPRIETARY RUNTIME Mendix PROPRIETARY RUNTIME
License cost
€24K starting $36K+ floor $50K+ typical
Code ownership
Standard Java / Python / JS Proprietary OutSystems Language Mendix model — not extractable
Deployment portability
Docker / K8s · any cloud · free Their cloud or their runtime Mendix Cloud or licensed runtime
AI architecture
AI-native · prompt builds the system AI copilot bolted on top Maia assistant on legacy IDE
Marketer live editing
Site Editor on the live app Dev ticket required Dev ticket required
Time to first app
Hours, from a prompt Weeks · trained developer needed Weeks · Mendix-certified team
Self-host / sovereignty
Free, forever · air-gapped option Available, but proprietary stack Available, but proprietary stack
The runtime trap

The proprietary runtime is the lock-in.

OutSystems and Mendix don't just sell a development tool — they sell a runtime that your application depends on to execute. Stop paying the license, and your apps stop running. There's no "extract and walk away."

This is the thing the demo never shows: every line of business logic, every page, every workflow lives inside a black-box engine you don't own and can't replace.

Apps stop running if you stop paying The runtime is licensed, not the code. Lapse and the platform unloads your applications.
No real export path "Migration services" exist — but they mean a six-figure rewrite project, not a clean export.
Vendor pricing controls your roadmap Per-developer seats and runtime tiers turn growth into a renegotiation, not a deployment.
AI is a copilot, not the architecture The AI sits on top of a 2010s visual modeler. It generates artifacts inside the same closed runtime.
What "AI-native" actually means

The AI is the architecture.
Not a copilot pinned to a legacy modeler.

Every enterprise low-code vendor will tell you they have AI now. The honest test: ask whether the AI generates the system, or whether the system was already there and the AI helps you click through it.

Bolted-on AI · OutSystems / Mendix

The AI lives inside the visual modeler

You still click through pages, drag entities into a UML-like canvas, and bind them to a proprietary process language. The AI suggests next steps inside that workflow.

VS
AI-native · Weezzi

The prompt builds the system itself

Tables, queries, RBAC, REST + GraphQL, dashboards, multi-language fields, audit logs — all generated as standard code from a natural-language description.

Bolted-on AI

AI output stays in the proprietary runtime

Whatever the assistant generates is still expressed in the vendor's own language and only runs on the vendor's engine. AI accelerates lock-in.

VS
AI-native

AI output is real, ownable code

Generated code is standard Java / Python / JavaScript with auto-generated REST + GraphQL + OpenAPI. Export the repository at any time.

Bolted-on AI

Trained on generic developer corpora

The assistant uses general-purpose code models. It doesn't know your platform's specific patterns for RBAC, audit, multi-tenancy, or workflow.

VS
AI-native

Trained on 17.5M lines of business apps

Two decades of platform IP and a real production SaaS — Weezzi.com — feed the model with the patterns enterprise apps actually need.

Bolted-on AI

The marketer still files a ticket

Content, copy, and layout changes go through a developer because there's no runtime editing surface. AI doesn't fix that — it just speeds up the developer's part.

VS
AI-native

Marketing operates the live application

The Site Editor sits inside the deployed app. Authorized users edit content, layouts, and audience variations directly on production. Zero dev tickets.

Enterprise Edition · On-Premises

Built for regulated buyers from day one.

Weezzi runs inside your own infrastructure. Annual license, included Builder seats, unlimited apps. BYOK AI. Source code escrow. Sovereignty-ready architecture for finance, healthcare, public sector, and defense-adjacent buyers.

Air-gapped deployment
Source code escrow
BYOK AI · your keys, your models
Unlimited apps · unlimited projects
24/7/365 SLA upgrades available
SOC 2 + ISO 27001 in flight
Trapped in OutSystems or Mendix today? Migration Kits import existing apps, normalize them inside the Weezzi application model, and regenerate them as standard code. Accelerator engagements start at €30K for up to 3 apps.
Annual license tiers
Pick a tier. Skip the SKU spreadsheet.

Unlimited projects, unlimited apps, BYOK AI, source code escrow — all included at every level.

Starter 10 seats €24,000/yr
Growth 25 seats €48,000/yr
Scale 50 seats €84,000/yr
Global 100 seats €150,000/yr
+25% MISSION-CRITICAL SLA · 24/7/365
Talk to sales

Stop renewing the runtime tax.
Start owning your stack.

Bring us a single trapped app or a portfolio of fifty. We'll walk through pricing, the migration path, and what an enterprise on-prem deployment looks like inside your environment.