HyperWrite

Budget AI writing assistant with templates and tone matching.

Rytr generates short-form content across 40+ use cases like emails, ad copy, and social captions, and can mirror a sample of your writing to match tone. It includes grammar checking, plagiarism checks, and a Chrome extension, positioned as a low-cost entry point to AI copywriting.

AI rewriting and paraphrasing assistant from AI21 Labs.

Wordtune rewrites and paraphrases sentences with tone control, plus grammar correction, summarization of articles and videos, and a humanizer for AI-sounding text. It runs as a browser extension, web app, and iOS app, and integrates into tools like Gmail and Slack.

AI academic writing assistant with autocomplete and source-grounded citations.

Jenni is an AI writing workspace for students and researchers. It autocompletes drafts in your voice, grounds claims in uploaded PDFs with citations that link to the exact page and paragraph, and formats references in over 2,600 citation styles with Zotero and Mendeley support. More than 6 million academics have used it.

AI writing assistant for grammar, tone, clarity, and generative drafting.

Grammarly checks grammar, spelling, clarity, and tone across the apps you already write in, and layers generative AI on top for drafting, rewriting, and tone adjustment. It works as a browser extension, desktop app, mobile keyboard, and web editor, with detection for plagiarism and AI-generated text on paid tiers.