📖 The AI Tool Bible

Writing

AI assistants for drafting, editing, and long-form content.

137 tools

Why it matters

AI writing tools have collapsed the cost of producing a first draft. The interesting question now is which one fits your workflow — a frontier general-purpose assistant, a marketing-team UX with brand voice training, or an in-doc Q&A layer.

What's in here

This category covers general-purpose chat assistants used primarily for text (Claude, GPT-4o, Gemini), marketing-focused copywriters (Jasper, Copy.ai), in-document assistants (Notion AI), and writer-specific tools for fiction or SEO content.

How to pick

Pick a frontier model (Claude, GPT-4o) when accuracy and tone matter. Pick a marketing tool when you need brand voice consistency and team workflows. Pick an in-doc tool when the content lives in Notion/Docs already.

PulsePost

AI-assisted blog platform that spins up SEO-optimized, multilingual company blogs on autopilot.

Paidbusiness-bloggingseo-content

AI Poem Generator

Free single-purpose web app that turns a one-line prompt into a rhyming poem.

Free· Free, no signuprhyming-poemsgreeting-cards

AI Prompt Genius

Open-source Chrome extension for building a searchable, tagged library of reusable AI prompts.

Free· Free and open-sourceprompt-libraryprompt-templates

Gist AI

Writing · ChatGPT (OpenAI)

ChatGPT-powered Chrome extension that summarizes articles, YouTube videos, and PDFs in one click.

Free· Completely freearticle-summarizationyoutube-summarization

Magic Potion

Writing · Multi-model

Visual drag-and-drop prompt editor for crafting, organizing, and reusing prompts across OpenAI, Anthropic, and Google models.

Freemiumprompt-engineeringprompt-library

Qurate

AI-powered semantic search engine for finding contextually relevant quotes across a 500K+ corpus.

Freemium· Free Plan: $0/forever · Monthly: $5/month · Annual: ?quote-searchspeechwriting

Telborg

AI-written daily briefings on US data center buildout, power, and permits.

Paid· Texas Data Centers Tracker — Pro: $189market intelligencedata center research

AI Toolbox

One Chrome extension for ChatGPT, Gemini, Claude, and Grok

Freemium· Free forever: $0 · Monthly: $9.99 · Annual: ? · Lifetime: ? · All Access Lifetime: ?Organizing ChatGPT and Claude chat history into foldersFull-text search across past LLM conversations

Cluely

Real-time AI meeting assistant that takes notes and answers questions while you talk

Freemium· Starter: Free · Pro: $19.99 · Pro + Undetectability: $149.99Live sales call coachingReal-time meeting transcription

Cookbook AI

Turn scattered recipes into a professionally designed, print-ready cookbook.

Paid· Monthly and Yearly plans (Yearly advertised as 55% off) plus a Credits Pack for one-off use; specific dollar amounts are gated behind the app rather than shown on the marketing page.Family heirloom cookbook from handwritten cardsPrivate chef signature-dish portfolio

GG Translator

Writing · OpenAI API (specific model undisclosed)

Turns aggressive gaming chat into constructive callouts in real time

Freemium· Free (bring-your-own OpenAI API key) / Solo $5 lifetime / Duo $7 for two lifetime licenses; 30-day money-back guarantee on paid tiersIn-game voice chat tone rewritingText chat de-escalation in ranked matches

Granola

AI notepad for back-to-back meetings — captures audio locally, drafts structured notes

Freemium· Basic: $0 · Business: $14 · Enterprise: $35Sales discovery call notesCustomer interview summaries

Landing Page Grader

Writing · In-house client-side heuristic (no LLM disclosed)

Free client-side grader that flags AI-sounding headlines, subheads, and CTAs.

Free· Free (no signup). Parent shop 1h Money Store sells adjacent paid products: LEVERAGE prompt pack EUR 19, MERIDIAN template EUR 17, bundle EUR 32.Pre-launch landing page copy reviewDetecting AI-generated headlines

Nyamuru Manga Name Studio

Writing · Model-agnostic (BYO LLM — prompts designed for ChatGPT, Claude, Gemini, or local models)

Open-source PWA for drafting manga storyboards (ネーム) with LLM-ready prompts and a structured OMNY data format.

Free· Free and open source (MIT License). No paid tiers; users bring their own LLM if they want to use the included AI prompts.Drafting manga storyboards (ネーム) from a prose scriptConverting light-novel scenes into structured panel layouts via an LLM

Propi

AI-generated client proposals with tracking and e-signature

Freemium· Free: $0 · Pro: $0 · Studio: $0Freelance client proposalsAgency scope-of-work documents

SillyTavern

Writing · Backend-agnostic — OpenAI, Anthropic Claude, Google Gemini, Mistral, OpenRouter, KoboldAI/KoboldCpp, Text-Generation-WebUI, Tabby, llama.cpp, NovelAI, AI Horde, any OpenAI-compatible endpoint

Locally installed power-user frontend for chatting with LLMs, image models, and TTS backends

Free· Free and open source (AGPL-3.0). Users pay only for whichever backend they connect (OpenAI, Claude, local models via KoboldCpp/Ooba/Tabby, AI Horde, etc.).Character-driven AI roleplayLong-form collaborative fiction

Transept

Writing · Multi-model (benchmarks Claude, GPT, Gemini, and open models; final routing not disclosed)

AI translation workspace with shared glossaries, styleguides, and decision-context memory

Freemium· Free: €0 · Starter: €29 · Pro: €79literary translationbook localization