AI Tools for Writers & Authors

Wordtune is an AI writing assistant from AI21 Labs that paraphrases, rewrites, proofreads, and summarizes text and YouTube videos.

Best for: Students paraphrasing sources and summarizing research, Non-native English speakers translating into English and rewriting for natural phrasing

Grammarly is AI writing assistance that proofreads, rewrites and tunes tone inside the apps where you already type.

Best for: Professionals sending daily email and reports who want grammar plus tone polish without leaving their apps, Marketing and sales teams enforcing brand voice through style guides, brand tones and snippets

Copy.ai turns GTM playbooks into multi-step AI workflows that drive prospecting, content creation, and sales ops from one platform

Best for: Mid-market and enterprise GTM teams consolidating multiple AI copilots into one platform, Sales development teams automating prospecting research and personalized outreach at volume

AI paraphrasing tool and writing suite for rewriting, grammar checks, and originality scans.

Best for: Students and academics who need paraphrasing, citations and a plagiarism scan in one cheap subscription, Non-native English writers who rewrite text daily and want grammar fixes without a heavy tool

Jasper runs 100+ AI marketing agents that take brand-governed content from brief to live campaign.

Best for: Marketing teams producing brand-governed content at volume across channels and markets, Content marketers optimizing for GEO, AI search citation, SEO and AEO

Bulk AI text, image, video, and music generation that runs inside Google Sheets formulas.

Best for: Marketers producing bulk ad copy, product images, and short video creatives from one sheet, Data analysts classifying, tagging, and cleaning thousands of messy rows without code

YouMind is an AI creation studio that turns saved articles, videos, and notes into articles, slides, images, videos, and webpages.

Best for: Solo creators who publish regularly across multiple formats, YouTubers who want research, script, and thumbnail in one conversation

Mintlify Agent is the AI writer, docs assistant, and MCP layer that makes your Mintlify docs readable by coding agents.

Best for: Developer teams already hosting docs on Mintlify, API-first companies whose users ask coding agents how the API works

Inkfluence AI turns one prompt into a finished ebook, cover, and AI-narrated audiobook, export-ready for Amazon KDP, Etsy, or Gumroad.

Best for: Consultants and coaches shipping client-facing guides, Marketers building lead magnets and content upgrades

Mac and Windows text expander that rewrites sentences with AI and keeps clipboard history inside any app you type in

Best for: Freelancers sending the same proposal, follow-up and invoice emails weekly, Support agents who need consistent answers with a human tone

Craft is a native notes, docs, tasks, and publishing app for Apple and Windows devices, with optional AI you can bring your own key to.

Best for: Writers, podcasters, and newsletter authors who draft and publish in one place, Apple device owners who want more than Apple Notes but less setup than Notion

Lifetime AI prompt library and toolkit in Notion: 30,000+ prompts, Custom GPTs and n8n automations for a one-time $199.

Best for: Solopreneurs and founders who want a lifetime prompt library without monthly fees, Marketers needing tested prompts for content, ads and social across multiple AI models

Microsoft 365 Copilot adds AI drafting, data analysis, and meeting summaries inside Word, Excel, Outlook, and Teams.

Best for: Enterprises and mid-size companies already running Microsoft 365, Teams-heavy organizations that need automated meeting recaps and action items

AI-native docs platform with a background agent that drafts doc updates from your commits, tickets, and feedback.

Best for: Product teams shipping frequent releases whose docs drift behind the product, Developer teams maintaining API references who want an OpenAPI playground plus MCP access for coding agents

Enterprise AI agents that run your brand-aware marketing and revenue workflows end to end.

Best for: Enterprise marketing teams scaling on-brand campaign assets with AI agents, Revenue teams personalizing approved content for each account with live signals

UPDF for iOS is an AI-powered PDF editor for iPhone and iPad — edit, OCR, convert, annotate, and chat with PDFs on the go.

Best for: Mobile professionals editing and reviewing PDFs on iPhone and iPad, Students summarizing, translating, and quizzing academic papers on the go

AI writing assistant built into Buffer for social post ideas, repurposing, and editing

Best for: Social media managers producing daily posts, Small business owners running their own channels

Visual no-code workflow builder for chaining text, image, audio, and video AI models across 20+ providers.

Best for: Content creators producing multimodal assets without writing code, Marketers automating repeatable multi-provider content pipelines

Chrome extension that rewrites rough one-line prompts into structured, detailed instructions inside ChatGPT, Claude, Gemini and 20+ AI tools.

Best for: Content creators and marketers prompting across several AI tools daily, Developers using AI coding tools who want structured prompts on the fly

DeepL Write Pro is an AI writing assistant that rewrites drafts for clarity and locks a whole team to one brand voice.

Best for: Multilingual teams that already pay for DeepL Pro and want writing quality held to the same standard, Marketing and communications teams enforcing one brand voice across many writers

All-in-one AI assistant bundling 30+ models for chat, writing, image and video generation, and coding.

Best for: Professionals who want multiple AI models under one subscription, Entrepreneurs, analysts, and researchers needing multi-purpose AI assistance

Kerlig is a native macOS AI writing app that calls 350+ models from a global ⌥+space hotkey, using your own API keys.

Best for: Mac users who write emails, Slack messages, or Jira tickets all day, Product managers and designers tightening written communication

Claude Code 위에서 18명 AI 코워커와 252개 한국어 업무 스킬을 조합해 HWPX·DOCX·PPTX 산출물까지 만드는 무료 오픈소스 플러그인.

Best for: 사업계획서·IR 덱·정부지원사업 신청서를 반복 작성하는 한국 스타트업·중소기업, HWPX·DOCX·PPTX 산출물이 필요한 한국형 오피스 문서 작업자

Kompozy turns one source into a month of on-brand videos, images, text, blogs and newsletters published across 9 platforms on autopilot.

Best for: Solo creators who need daily multi-platform presence without editing or scheduling by hand, Small marketing teams turning one podcast, video or blog into a month of posts