Real-time markdown collaboration.
Without Git friction.
Write, edit, and version markdown together instantly. No blocks. No commits. Just clean text.
Multiplayer editing
Co-write with your team using live cursors. Stop waiting for pull requests just to fix a typo or update a spec.
Built-in version history
Never lose a thought. Every change is tracked automatically so you can restore any version in one click without repo ceremony.
Write together, instantly.
Say goodbye to merge-conflict markdown and workflow ceremony. SyncMark lets your team co-author specs, prompts, and docs in real-time with live cursors—without the overhead of Git branches or PRs.
- Real-time cursor presence
- Simultaneous editing
- Zero merge conflicts
Time travel without the Git CLI.
Every keystroke is saved automatically. Browse the history of your documents and restore previous states in a single click. It's version control built for prose, not code.
- Continuous auto-saving
- Granular revision history
- One-click restore
Escape the block bloat.
We refuse to trap your docs inside heavy, proprietary block editors. Your writing stays pure, standard markdown—architecturally clean, perfectly portable, and ready for AI agents.
- Standard markdown format
- AI-agent compatible
- Export anywhere
Share with the world.
Turn any document or folder into a public link. Control access with passwords or require sign-in for internal sharing.
- Public read-only links
- Password protection
- Share entire folders
Public Access
Anyone with the link
https://syncmark.io/s/8f92a...
Invite anyone, instantly.
Bring your colleagues into your shared workspace with a single click. No complex sign-up flows or domain verifications—just send an invite and start collaborating right away.
- Invite via email
- Role-based access control
- Workspace isolation
Invite to Workspace
colleague@example.com
Send
Talk where you work.
Keep the context right next to your content. Live chat within your workspace ensures conversations don't get lost in Slack. Mention colleagues to loop them into the discussion instantly.
- Live workspace chat
- @mention colleagues for updates
Your data, in and out.
Don't get locked into another platform. Import your existing markdown files instantly, and export your entire workspace at will. Your knowledge remains yours.
- Bulk import markdown
- Export what you need
- Preserve folder structure
More than just prose.
While markdown is our core, we know modern teams rely on structured data. SyncMark fully supports collaborative editing for configuration files like YAML, JSON, and more.
- Syntax highlighting for JSON/YAML
- Validates structure as you type
- Consistent multiplayer experience
version: "2.0"
services:
api:
image: syncmark/api:latest
ports:
- "8080:8080"
Trusted by AI-native builders
"We used to write specs in Notion, but the blocks felt too heavy and slow. Switching to SyncMark gave us the speed of a local .md file with the multiplayer sync of Google Docs."
S
Sarah L.
Founder, AI Startup
"Git PRs for prose are absurd. SyncMark lets my open-source maintainers collaborate on documentation without the workflow ceremony. It's pure, portable markdown."
How it works under the hood
SyncMark uses Conflict-free Replicated Data Types (CRDTs) to sync your keystrokes peer-to-peer via WebSockets. There's no central database locking your text. Your document state is computed instantly, allowing for flawless multiplayer editing and a mathematically provable version history. No commits required.
Automate your workflow.
SyncMark isn't just a UI. It's a headless content platform perfect for AI-driven workflows. Use our REST API to sync documentation, manage users, and feed pure markdown directly to your LLMs.
100%API Coverage
StandardOpenAPI Spec
curl-XPOSThttps://api.syncmark.io/v1/documents\
-H"Authorization: Bearer $API_KEY"\
-H"Content-Type: application/json"\
-d'{
"title":"New Deployment",
"content":"# Deployment Instructions..."
'}
Ready to ditch the Git friction?
Join the developers and AI-native teams writing pure, collaborative markdown.