Liveblocks

Collaboration + comments API

Free tier + paidRealtime, comments & collabliveblocks.io

What it is

Hosted realtime collaboration infrastructure covering presence, multiplayer state, a Yjs-compatible sync backend and a full Comments product with threads, mentions and email notifications. Ships pre-built React components alongside lower-level primitives, so threaded annotations can be attached to an article, editor or media player without running a socket server.

Why it earns a slot

Fastest route to Google-Docs-style presence plus inline comments on a page. The Comments product alone replaces a homegrown thread, mention and notification stack, and the free tier has no monthly-active-user cap at all.

Know before you commit

The free plan caps simultaneous connections at 10 per room, which a busy live article thread will exceed. Paid plans meter usage against monthly credits rather than a flat seat price, so a traffic spike converts directly into overage.

Getting started

npm i @liveblocks/client @liveblocks/react

Field notes

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Pricing snapshot

Free: unlimited MAU, unlimited rooms, 10 projects, 10 simultaneous connections per room, 10 MB storage per room, 30-day version history. Pro $25/mo billed annually with $30 monthly credits. Team $500/mo with $600 credits. Enterprise custom

Snapshots move fast — verify at checkout, and post a field note if it changed.

Drop into your Lovable chat

Evaluate Liveblocks (https://liveblocks.io) for this project, then use it only if it fits what we are already building.
Context: Collaboration + comments API. Hosted realtime collaboration infrastructure covering presence, multiplayer state, a Yjs-compatible sync backend and a full Comments product with threads, mentions and email notifications. Ships pre-built React components alongside lower-level primitives, so threaded annotations can be attached to an article, editor or media player without running a socket server.
Reviewer notes (general, not written for this codebase): Fastest route to Google-Docs-style presence plus inline comments on a page. The Comments product alone replaces a homegrown thread, mention and notification stack, and the free tier has no monthly-active-user cap at all.
Watch out for: The free plan caps simultaneous connections at 10 per room, which a busy live article thread will exceed. Paid plans meter usage against monthly credits rather than a flat seat price, so a traffic spike converts directly into overage.
Pricing: Free: unlimited MAU, unlimited rooms, 10 projects, 10 simultaneous connections per room, 10 MB storage per room, 30-day version history. Pro $25/mo billed annually with $30 monthly credits. Team $500/mo with $600 credits. Enterprise custom
Setup: npm i @liveblocks/client @liveblocks/react
Rules: treat the notes above as background only. Do not assume a theme, style, layout or feature that is not already in this project — inspect the existing code first and ask me before changing visual direction.

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Neighbourhood

How Liveblocks sits against the rest of the atlas — swaps, companions and the tools builders actually save alongside it.

Instead of thisGiscus PartyKit Socket.IO Yjs Ably Agora Chatwoot Circle Crisp Cusdis

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