Notion AI

Grammarly AI extends the popular writing assistant with generative features for drafting, rewriting and adjusting tone anywhere you type. Its GrammarlyGO and editor work across the web, documents and email with real-time grammar, clarity and style suggestions. Grammarly's strength is ubiquitous, context-aware writing help rather than long-form generation.

Mem is an AI-native notes app that organises your knowledge automatically so you never have to file or tag manually. It surfaces related notes, answers questions across everything you have written, and acts as a personal knowledge assistant. Mem suits people who want a self-organising 'second brain'.

Jasper is an enterprise marketing-copy platform built to keep AI output on-brand at scale. It offers brand voice training, campaign workflows, templates and team collaboration tailored to marketing teams. Jasper sits above generic chatbots by focusing squarely on marketing operations and brand consistency.

Wordtune, from AI21 Labs, focuses on rewriting and refining your own sentences rather than generating content from scratch. It offers rephrasing, tone shifts, shortening, expanding and summarisation in a lightweight browser extension. It suits writers who want to keep their voice while polishing clarity and flow.