TextCortex

Freemium

AI writing assistant and ZenoChat companion that works across 10,000+ apps via a browser extension, with personas and a personal AI memory.

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Our take

A flexible, extension-first writing assistant with customizable personas and a personal knowledge memory that follows you across the web.

Best for

Knowledge workers who want AI writing help inside Gmail, LinkedIn, Notion, and Docs rather than a separate app.

Pros

Works across 10,000+ sites via a Chrome extension
ZenoChat assistant with customizable personas
Personal AI memory and knowledge base
Supports 70+ languages with a free daily allowance

Cons

Output quality varies by task and persona setup
Crowded category against Grammarly and Jasper
Advanced features sit behind paid tiers

How it compares

Versus Grammarly, TextCortex leans toward generation and chat rather than correction; versus Jasper, it is cheaper and more personal-productivity focused.

Full review

TextCortex is an AI writing assistant built around a browser extension that surfaces ZenoChat, custom writing personas, and a personal AI memory inside the tools people already use, from Gmail and LinkedIn to Notion and Google Docs.

It supports more than 70 languages and offers a free tier with a daily creation allowance, with paid plans unlocking higher volume and advanced features.

It suits individuals who want generation, paraphrasing, and chat embedded in their workflow; teams with heavy brand-voice needs may still prefer a dedicated marketing-copy platform.