Leaflet is a social publishing platform on the Atmosphere, designed to help writers share ideas and build communities. It supports blogs, newsletters, and other forms of publication, with tools to write and manage posts, save drafts, and track subscriptions. Writers can send updates by email and share them through Bluesky and the Atmosphere, where they can connect with a broad social ecosystem.

The platform offers free custom themes and custom domains, along with publication pages and navigation. Readers can subscribe, comment, quote, and share posts. Leaflet also supports collaborative editing and sharing, and its examples include personal blogs, link collections, music writing, project updates, and commentary on politics and culture.

Leaflet’s free plan includes unlimited publications and posts, subscriptions through Atmosphere, and core publishing tools. Its Pro plan costs $120 per year and adds analytics for subscribers, page views, and referrers, plus 1,000 email subscribers; additional groups of 1,000 cost $5 per month. Group publications with unlimited contributors are listed as coming soon, alongside memberships and other features.