Grammarly

Grammarly develops AI writing assistance software that helps people draft, revise and refine text for work and study. Grammarly reports that its tools are used by more than 40 million people and 50,000 organizations, including people at 96% of the Fortune 500. Its linguists and researchers work in natural language processing and generative AI, placing Grammarly in a category that has moved from rule-based grammar checking toward models that can suggest rewrites, tone changes and full drafts.

Its offerings include Grammarly Free, Grammarly Pro for professionals and teams, an Enterprise plan for larger organizations, and Grammarly for Education, which gives students and institutions campus-wide access to writing support. The software works across more than 1 million apps and websites, offering features such as tone adjustment, sentence rewriting, brand style guidance and AI text generation. Enterprise plans add confidential mode, granular roles and permissions, and data loss prevention, features that matter to organizations wary of sending internal text to AI services. Grammarly states that it does not sell user content or let third-party providers train models on it, in line with its emphasis on security and privacy.

Grammarly was founded in 2009 and began as a grammar checker for students before expanding into a broader AI-powered communication platform. Grammarly is now part of Superhuman, an AI-native productivity platform, where it remains the core writing product. Grammarly offers a hybrid working model that supports team culture while allowing employees to work from home when they need focus time. Hybrid arrangements of this kind have become common among software companies seeking to balance in-person collaboration with remote flexibility.