EiffelStudio

At a glance

• Editor score
  4.2 / 10
• Pricing
  Free plan
• Best for
  Eiffel and contract-driven development
• Free plan
  Yes
• Paid from
  $16.50/device/mo
• Founded
  1985
• Facts checked
  20 Sep 2026

• Where it wins

  • Executable preconditions, postconditions, and invariants
  • Integrated debugging, testing, profiling, and metrics
  • Runs on Windows, macOS, and Linux

• Where it doesn't

  • Personal plans limit code analysis
  • Each license supports one simultaneous device
  • Ecosystem integration is centered on Microsoft .NET

Our verdict on EiffelStudio

EiffelStudio is an integrated development environment for the Eiffel object-oriented language. It brings editing, class browsing, navigation, compilation, debugging, testing, documentation, profiling, modeling, and deployment-oriented workflows into one environment. Its defining focus is Design by Contract, with executable preconditions, postconditions, and invariants that help teams express software rules directly in code. It suits solo developers and teams working on complex, long-lived systems where correctness and maintainability matter.

The feature depth is strongest around software correctness and engineering visibility. EiffelStudio includes automatic testing, runtime assertion checking, an integrated debugger, built-in metrics, profiling, automatic documentation generation, and round-trip BON modeling tools. Void safety and parallel programming support extend its reach beyond basic editing and compilation. The compiler and build-test-deploy workflow keep core development activities together, while Microsoft .NET integration provides a documented connection to that platform. The trade-off is focus: this is an Eiffel-centered environment rather than a general-purpose IDE positioned around a broad language ecosystem.

Pricing offers a free starting point, with Personal licensing for non-commercial use and Professional licensing for commercial usage. Personal is available at $16.50 per license per month or $165 per license, with the compiler, IDE, libraries, limited code analyzer, and one simultaneous device. Professional costs $54.50 per license per month or $545 per license and adds commercial usage and the full code analyzer. A Startup bundle costs $144.50 per three-license package per month or $1,445 per three-license package. EiffelStudio is a strong fit for Eiffel and contract-driven development; teams needing broader ecosystem coverage or more flexible device access should compare alternatives.

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EiffelStudio pricing

All 3 EiffelStudio plans and prices →

EiffelStudio fact sheet

EiffelStudio integrations

EiffelStudio lists 1 integrations on its own site.

• Microsoft .NET

Alternatives to EiffelStudio

• IntelliJ IDEAA full-featured, cross-platform IDE for Java and Kotlin teams.9.4
• Visual StudioA full-featured Windows IDE for .NET and C++ teams with broad tooling.9.3
• PyCharmA full-featured Python IDE with strong testing, debugging, data, and remote workflows.9.2

See all EiffelStudio alternatives →

Featured on iTechGuides

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update