MarkGo quietseek

Writing, layout, AI assistance and publishing in an installer of a dozen-odd MB. Small: about 12 MB on Windows and Linux and about 23 MB for the universal macOS build, with one-click in-app updates. Any folder can be a notebook and every note is standard Markdown, so you can open, sync or version it with other tools at any time. AI writing reuses the agents already signed in on your machine (Claude Code, Codex, Gemini CLI and more), with no separate API key. PDFs are generated straight from the editor's styling, with no LaTeX or printer driver to install. Beautiful: WYSIWYG layout with 15 built-in layout themes, plus imported Typora themes for the light or dark appearance. Copy styled rich text into any editor, or publish straight to WeChat Official Account drafts; math becomes SVG and Mermaid diagrams become images automatically. Every change from an agent is shown as a paragraph- and word-level diff, and nothing applies until you accept it. Focus mode, typewriter mode, three editor widths and Typora-style paragraph shortcuts. The editor is WYSIWYG on Tiptap 3 with a Markdown source mode to switch to at any time, covering headings, lists, task lists, quotes, highlights, superscript and subscript, links, images, tables, code blocks, KaTeX formulas and live-rendered Mermaid diagrams, with collapsible front matter. Images can be pasted, dropped or inserted by command, uploaded to a PicGo or PicList host, or saved in an assets folder beside the document.