Paperpal

Paperpal is an academic writing assistant from Cactus Communications (Mumbai), trained on millions of published articles and professionally edited manuscripts rather than generic web text. It offers real-time grammar and academic-style suggestions, sentence-level rewrites, translation, and research features: manuscript submission-readiness checks, plagiarism and AI-content detection, citation generation, and Research & Cite backed by a large research article database. It works across the web app, Microsoft Word, Google Docs, Overleaf, and a browser extension.

It is trusted by 400+ journals and publishers and reports 1.5M+ active users, with strong adoption in universities. The free tier gives 200 suggestions/month, 5 daily uses of rewrite/translate/AI-review features, and limited plagiarism checks; Prime runs $25/month or $139/year (with multi-year saver discounts), and institutional plans cover universities and publishers.

Limitations: it is narrow by design — built for academic writing, not marketing or casual content. It does not review the scientific accuracy of research content, only the writing. Real-time editing is strongest in Word, and there is no dedicated mobile app. Free-tier monthly limits mean regular users will need Prime.

Sign up at paperpal.com; use the web app or install the Word add-in, browser extension, or Overleaf integration.