# Eiffel > Analysis by Optimly for Optimly AI Visibility, in the Optimly AI Brand Index. Last analyzed September 21, 2026. > Eiffel provides an integrated development environment (IDE) called EiffelStudio and the Eiffel programming language, designed to help developers build predictable, controllable, and high-quality software. It emphasizes 'correctness by construction' through unique features like Design by Contract, truly automatic testing, and the SCOOP model for concurrent applications, aiming to prevent bugs and reduce development costs. - Business Profile: https://optimly.ai/brand/eiffel - Publisher: Optimly (https://optimly.ai) - Dataset: Optimly AI Brand Index (https://optimly.ai/brand) - Official website: https://eiffel.com/ - Logo: https://logo.clearbit.com/eiffel.com - Slug: eiffel - Brand Authority Index tier: Emerging - Category: Integrated Development Environment (IDE) - Last Analyzed: September 21, 2026