Writing with your own reference material
TextCortex helps draft and rewrite content, chat with uploaded knowledge, and configure assistants for recurring work.
Free plan
The $0 tier includes limited core AI features, custom agents, and up to 50 MB of file storage. Usage is capped; the higher-capacity premium trial is separate from the ongoing free plan.
Free tiers can restrict usage or features. Paid upgrades are separate.
The official pages used to check this listing.
Ahrefs AI Writing Tools
Writing & translation
Ahrefs provides a collection of free AI utilities for short writing and marketing tasks. The catalog includes paragraph rewriting, summaries, title ideas, meta descriptions, captions and product copy. Each tool focuses on a narrow job, making the collection useful when you want a quick starting point rather than a full writing workspace.
DeepL
Writing & translation
DeepL provides AI translation alongside a Write assistant for revising wording and adjusting written expression. Its browser tools are convenient for understanding a passage in another language or refining short text. Free translation and writing are available, while larger inputs, advanced controls and enhanced data protection belong to paid offerings.
Grammarly
Writing & translation
Grammarly combines grammar assistance with generative tools for drafting, revising and responding to text. It works through its own writing surfaces and integrations into other apps. The free AI prompt allowance is useful for occasional emails, short drafts and tone adjustments alongside its basic proofreading features.
LanguageTool
Writing & translation
LanguageTool checks spelling, grammar and style across multiple languages and also offers AI sentence rephrasing. Its browser editor works well for short messages and language practice. The free tier provides basic checks and a small daily paraphrasing allowance, with extensions available for writing in supported browsers and applications.