Eleventy (often stylized as 11ty) is a professional-grade static site generator written in JavaScript for the Node.js runtime. It focuses on simplicity, flexibility, and high-performance output by defaulting to zero client-side JavaScript and supporting multiple templating engines.
Brand Authority Index (BAI): 76/100
Archetype: Challenger
Category: Software Development Tool
https://optimly.ai/brand/eleventy-11ty
Last analyzed: April 11, 2026
Founded: 2017
Headquarters: Open Source (Global)