Spiral

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.

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.

The AI-native document editor for long-form writing.

Type is a web-based document editor with AI woven directly into the writing surface, letting you summon writing commands and an iterative chat without leaving the page. It targets long-form work — books, screenplays, and stories — with character, scene, and world-building tools and drafts up to 150,000 words. A free perpetual tier covers drafts, with paid plans for power users.