GRIN

GRIN is an influencer marketing platform that helps brands discover, manage, and track their relationships with content creators. It provides tools for content management, performance analytics, and creator payments to optimize influencer campaigns.

GRIN is an influencer marketing platform, which is fundamentally different from an online publishing platform like Medium. While GRIN deals with content and its performance, it's focused on managing influencer campaigns for brands, not providing a platform for independent writers to publish long-form articles and monetize them through a membership model. The core 'must-have' features of a rich text editor, distribution/recommendation engine for long-form content, and membership monetization for writers are not present. It does offer some tangential features related to content performance tracking and social sharing, but these are in the context of influencer marketing, not content publishing.