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cyberWriter
Native Swift Markdown Vault, Mermaid, HTML Editor, AI, KaTeX
A native macOS Markdown editor with live PDF preview, AI workspace, vault support, LaTeX, Mermaid diagrams, and zero external dependencies. Integrated Apple Intelligence and local and cloud API AI services, lifetime license. Knowledge graph, chat with your vault and embeddings built right into the app, no insecure community plugins needed, the app is fully sandboxes and available through the Apple App Store and direct sale through Lemon Squeezy, with a full feature free trial built in.
Hey Product Hunt 👋
I'm John, maker of CyberWriter. My day job is Chief Analytics Officer at one of NYC's largest community health center networks, where I'm responsible for clinical data infrastructure and a lot of writing - research notes, documentation, scientific manuscripts. I built CyberWriter because I kept hitting the same wall with the markdown editors I'd otherwise love, but needed something more secure, that doesn't rely on plugins for Mermaid, graph links, AI, KaTeX, CSS, templates etc.
Most of the best ones are Electron-based and depend on community plugins to do anything beyond the basics. No shade at Obsidian, but every plugin you install is a third-party dependency that gets handed your content. When the content is anything sensitive, that calculus stops working for me.
I wanted a fully native Swift, sandboxed editor where the features I actually needed - AI assistance, scientific writing tooling, citation handling - were built in, not stitched together from a plugin marketplace. macOS sandboxing isn't a checkbox here; it's an architectural boundary that means CyberWriter can't reach files or network endpoints it hasn't been explicitly granted. Apple Intelligence creates a map of your vault and RAG embeddings which can be sent as context to your own local or cloud AI models. I don't want subscription fees or to sell AI services, bring your own!
It's the editor I wish existed during late-night drafts with a half-finished paper and a stack of PDFs open. Would love your feedback, especially from folks who write in environments where "trust me" isn't a good enough security mode.
About cyberWriter on Product Hunt
“Native Swift Markdown Vault, Mermaid, HTML Editor, AI, KaTeX”
cyberWriter was submitted on Product Hunt and earned 3 upvotes and 1 comments, placing #123 on the daily leaderboard. A native macOS Markdown editor with live PDF preview, AI workspace, vault support, LaTeX, Mermaid diagrams, and zero external dependencies. Integrated Apple Intelligence and local and cloud API AI services, lifetime license. Knowledge graph, chat with your vault and embeddings built right into the app, no insecure community plugins needed, the app is fully sandboxes and available through the Apple App Store and direct sale through Lemon Squeezy, with a full feature free trial built in.
On the analytics side, cyberWriter competes within Writing, Notes and Artificial Intelligence — topics that collectively have 536k followers on Product Hunt. The dashboard above tracks how cyberWriter performed against the three products that launched closest to it on the same day.
Who hunted cyberWriter?
cyberWriter was hunted by John Taverna. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of cyberWriter including community comment highlights and product details, visit the product overview.
John Taverna