Writing and publishing
GrayCat Markdown
Write in Visual or Markdown source on Mac, preview your layout, and export to Word, PDF, and HTML. Keep documents in local folders or iCloud.
Mac download 3.0.0
GrayCat · Independently made
Writing, reading, and everyday work.
Write an article, work through a document, and listen to your own music. GrayCat makes tools for everyday work; KneeDaily focuses on knee sports-medicine reading.
Everyday tools
Plain-text editing
GrayCat Text
Edit plain-text files while preserving their encoding and line endings, with log viewing, search, comparison, and recovery. Very large files open as read-only previews.
App Store 1.0.1
Local music library
GraycatTunes
Play and organize your own music files on your Mac—no streaming account required.
App Store 1.0
PDF tools
GrayCat PDF
Read original and translated pages side by side, with tools for OCR, merging, compression, annotations, signatures, and export.
App Store 1.0.1
Specialist reading from the same developer
KneeDaily 2.0.0
Follow knee sports-medicine research in English or Chinese. Read published book chapters, search PubMed, and keep your papers, reading notes, and imported books together.
iPhone and iPad
English and Chinese interfaces, literature search, published book chapters, offline reading, and private notes. Requires iOS or iPadOS 17.0 or later.
Read on the web
Browse articles, recent literature, and books with chapters published over time on the English or Chinese website.