Synaptic

New — AI writing has landed

Write Better,together.

The collaborative document workspace with sub-200ms sync, live cursors, and an AI that drafts alongside your team.

See how it works

Real-time. AI-native. Built for how teams actually write.

Asking a question about a document in Synaptic and getting an answer with its supporting passages cited

Everything you need

One Workspace.
A thousand superpowers.

AI that drafts with you

Summarize, rewrite, or expand any section. Powered by Gemini, on by default.

Real-time CRDT sync

Every keystroke merges through a conflict-free replicated document — no spinners, no merge conflicts, no waiting.

Live cursors & presence

See who's reading, who's typing, and where — exactly like sitting at the same desk.

Rich block editor

Headings, code, callouts, embeds. Slash to insert anything, anywhere.

Share with a link

View, comment, or full-edit access. Permissions that just make sense.

Secure by default

Google OAuth, encrypted storage, and granular per-document roles.

The editor

A blank page,
with infinite backup.

The block editor stays out of your way until you need it. Then it becomes the most powerful surface your team has ever shared.

AI that drafts in your voice.

Select any block and Synaptic rewrites, tightens, or expands — instantly, with full context of the surrounding doc.

Inline comments & threads

Pin feedback to any sentence. Resolve, react, and keep the conversation right next to the work.

Slash commands for everything

Type / to insert headings, code, embeds or invoke the AI. Power users never touch the mouse.

Selecting a paragraph in Synaptic and accepting an inline AI rewrite

How it works

From zero to in-sync,
in four short steps.

01

Sign up in 10 seconds

One click with Google. No credit card, no setup wizard, no friction.

02

Open a fresh page

Type a slash to add headings, lists, code, or call our AI to draft for you.

03

Invite the team

Share a link with view, comment, or edit access. They join — instantly.

04

Think together

Cursors fly, edits sync, decisions stick. Magic, but explainable.

Built on technologies that you can trust

Next.jsReactTypeScriptLiveblocksBlockNoteSupabaseGemini AITailwind

Start writing.
Together.

No credit card. No pricing tiers. Just sign in and start writing.

Get Synaptic free