Best Free Writing & Content Tools in 2026

Kuku is an AI-native Markdown editor for macOS that combines local-first file storage with built-in AI capabilities. Files stay as .md on disk, compatible with vim, git, and Obsidian. Features include bidirectional WikiLinks, a force-directed graph view, a Gemini-powered AI agent that can search your vault and create documents, cursor-style diff editing, local speech-to-text via Whisper.cpp, and full-text search with BM25 ranking. Lightweight at ~15MB.

Obooko is a free online platform that allows users to discover, read, and download a wide variety of legally licensed eBooks. It partners with authors and publishers to offer books in PDF, EPUB, and Kindle formats, ensuring direct downloads without third-party mirrors or paywalls. The platform aims to make reading accessible to everyone by providing a vast library of fiction, non-fiction, classics, and more across over 30 genres. For readers, Obooko offers an integrated online reader that syncs reading progress across devices, provides customizable reading experiences (light/dark mode, text size), and allows users to build wishlists and rate titles. Users can either read books directly in their browser or download them for offline reading. The service is entirely free, funded by advertising, and does not require subscriptions or upgrades. For authors, Obooko provides a platform to publish their books for free, reach a global audience of dedicated readers, and retain full rights to their work. Authors can upload their eBooks in PDF, EPUB, and Kindle formats, receive direct feedback and ratings, and even share in advertising revenue. The platform offers free tools to help authors convert manuscripts and optimize their listings, promoting visibility for independent voices.