QuillBot
FreeAI writing toolkit best known for its paraphraser — rewrite sentences in different tones, plus a grammar checker, summariser, translator, citation generator and AI detector in one workspace.
Bonus: install QuillBot from your browser
Why we recommend QuillBot
QuillBot owns the 'paraphrasing tool' query the way Google owns search — it became the default way students and non-native English writers rework a clumsy sentence without losing the meaning. The paraphraser offers distinct modes (Standard, Fluency, Formal, Simple, Creative) with a synonym slider, and the surrounding suite — grammar checker, summariser, translator, citations — makes it a one-stop writing bench. Is it free? The core is: paraphrasing capped at 125 words per run, two modes, and unlimited grammar checking. Premium removes the caps and unlocks all modes.
Best use cases
How to use it: paste text at quillbot.com, pick a mode, and click Paraphrase — coloured diffs show what changed; the same account works in the Chrome extension and Word add-in so rewriting happens where you type. It ships a PWA manifest, so browsers offer an install prompt for a standalone window. Best for de-clunking drafts, compressing readings into summaries, and polishing emails when English is your second language.
Honest limitations
Does it work offline? No — every rewrite is a server call; there is no offline mode. The 125-word free cap makes long documents tedious, Creative modes can drift from your intended meaning, and universities increasingly treat heavy paraphrasing of sources as misconduct — it's a writing aid, not a laundering machine. The AI detector, like all of them, produces false positives.
Are you the maker of QuillBot? Claim this listing →
More in Productivity
Collaborative virtual whiteboard with a hand-drawn feel. Open-source Miro/Figma FigJam alternative — real-time collaboration, offline support, and end-to-end encrypted rooms.
All-in-one workspace combining notes, databases, wikis and project boards. Pages are built from composable blocks, and the free personal plan covers unlimited pages and blocks for individuals.
Task manager with natural-language dates, projects, labels and filters. Syncs across web, mobile and desktop; the free tier handles up to five personal projects with recurring tasks.
Kanban board app where cards move across lists to track work. Drag-and-drop simplicity, checklists, due dates and automation via Butler rules; free tier includes unlimited cards on up to ten boards per workspace.
Project management platform bundling tasks, docs, goals, whiteboards and chat in one app. Highly configurable views (list, board, Gantt, calendar) with a functional free tier for small teams.
Spreadsheet-database hybrid: tables with typed fields, linked records, and views (grid, kanban, calendar, gallery) plus form inputs and automations. Free tier allows unlimited bases with capped records.