Eiffel is like the engineer who always has a plan - and a backup plan. Created by Bertrand Meyer in the mid-1980s, it’s a language that doesn’t just talk about quality, it builds it into the code. With Design by Contract at its core, Eiffel ensures each component knows exactly what it must do and what it can expect from others. It’s like writing a contract between code parts - no surprises, just clarity.

Eiffel goes further: it offers features such as multiple inheritance, generic programming and a syntax that is both clear and expressive. Tools like EiffelStudio provide a complete environment for developing, testing and debugging. While Eiffel is not a mainstream language today, it has influenced many modern languages and remains popular with developers who value robustness and precision.

So, if you’re after a language that treats quality seriously and helps you write long‑lasting code, Eiffel may be exactly what you’re looking for.