Writing AI apps

Subscription AI storyteller and anime image generator with encrypted stories.

NovelAI is a subscription platform for AI-assisted fiction writing and anime-style image generation, built around Anlatan's own storytelling models rather than general-purpose assistants. Paid tiers include unlimited text generation with adjustable context sizes, plus Anlas credits for its NAI Diffusion image models. Stories are stored end-to-end encrypted, so only the author can read them.

AI academic writing assistant with autocomplete, source-grounded citations, and 2,600+ styles.

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 academic writing assistant that takes researchers from draft to journal submission.

An academic writing assistant from Cactus Communications with discipline-aware language editing, paraphrasing, and translation tuned to scholarly prose. Pairs a research finder over 250M+ articles and citations in 10,000+ styles with pre-submission checks for plagiarism, AI-generated text, and 30+ technical requirements. Works on the web and inside Microsoft Word, Google Docs, and Overleaf.

Style and grammar editor with manuscript-level feedback for authors.

ProWritingAid goes beyond grammar to analyze pacing, sentence variety, dialogue tags, and readability, plus AI-driven manuscript critique, beta-reader simulation, and story analysis. It integrates into Word, Google Docs, Scrivener, and browsers, aimed at long-form and fiction writers.

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 writing partner built specifically for fiction and novelists.

Sudowrite is an AI writing tool aimed at fiction authors, with a Story Bible for outlining, Write/Expand/Describe tools that draft in the author's voice, and a Canvas for plotting arcs and themes. Unlike general assistants, it is tuned for long-form creative narrative rather than business or marketing copy.

Paraphrasing, grammar, and summarizing suite used by 35M+ writers.

QuillBot is a writing suite centered on paraphrasing, grammar checking, and summarizing, with added tools for citation, plagiarism and AI detection, and translation. It runs on the web, as browser extensions and a Word add-in, and on desktop and mobile, widely used by students and professionals.

AI-native collaborative document editor for serious writers.

Lex is a clean, Google-Docs-style word processor with AI editing built in — feedback, brainstorming, rewriting, and AI commands alongside real-time collaboration and version history. It targets writers who want frontier models inside a focused writing surface rather than a chat sidebar.

Budget AI writing assistant with 40+ 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 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.