AI THAT STAYS OUT OF YOUR WAY
Focus. Flow.
Markdown.
A minimalist editor for writers who value craft. Live preview, ghost completions, and invisible AI.
macOS 12+
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Free beta
# Welcome to Kestrin
Start typing to see live preview in action. Markdown syntax fades away as you write.
## Features
** Bold text ** renders instantly. * Italic too * . Even ` inline code ` becomes beautiful.
The syntax only appears when your cursor is nearby. Otherwise, it's just your words.
01
Restructure, rewrite, refine
Select. Cmd+M. Pick a variant. Done.
Ship fast. Stay aligned. Keep quality.
@ai make this clearer
02
Plan with AI
Stuck? AI outlines. You shape.
// Blank cursor. Unsure where to start...
@ai help me outline this product strategy doc
03
Smart snippets sync to source
Embed live data from GitHub, Linear, Datadog—anywhere. AI summarizes it in natural language. Source changes, your doc updates.
SMART SNIPPETS • LIVE CONTEXT
## Sprint Planning
PR Status: 3 approved, ready to merge [[PR #412]]
Auth Epic: JWT done, Redis session next [[ENG-2847]]
Deploy health: 99.7% uptime, p95 latency 142ms [[Datadog]]
The auth migration is on track. Once Redis sessions ship, we can deprecate
the legacy cookie flow. No blockers from the security review.
Live via MCP
GitHub Linear Datadog
04
Search by meaning, not filename
Find docs by what they say, not where they live.
Quick Switcher RAG-powered
FOUND BY SEMANTIC MATCH
product-vision-2024.md
...building an AI-first platform that augments human creativity...
#ai #strategy
q4-planning.md
...intelligent features that understand user intent...
#planning
Write beautifully.
Ship faster.
Join writers at Linear, Notion, and hundreds of startups who trust Kestrin for their best work.