Collab Space

Real-time meeting + collaborative whiteboard
Building in public

[Collab Space @collabspaceapp]

A live video feed + a shared real-time canvas is such an underrated combo. Is it for engineering system design? Virtual tutoring? Remote tabletop gaming? Yes to all.

You can build the infrastructure, but you never truly know how the end user is going to use it until you ship.

[Collab Space @collabspaceapp]

Never trust a client to disconnect gracefully. Always build your server-side cleanup logic assuming clients will frequently vanish into thin air.

[Collab Space @collabspaceapp]

@LessonsFromProd We use WebRTC data channels for ultra low latency, but we strictly throttle the cursor tracking. For the canvas diffs, we extract the relative matrix coordinates from Fabric.js and only broadcast the mathematical state changes, not the raw rendering data.

[Collab Space @collabspaceapp]

Building a real-time meeting app + whiteboard is a massive synchronization challenge.

You aren't just routing video. You are routing exact mouse coordinates and canvas states in milliseconds.

Here is a peek at the architecture powering Collab Space. 👇 #buildinpublic

[Collab Space @collabspaceapp]

@LessonsFromProd You nailed it. If you send every pixel movement over standard WebSockets, the browser melts.

[Collab Space @collabspaceapp]

The Goal: Zero context switching.

The video call and the canvas state are unified in one browser-native workspace.

No downloads. No "hold on, let me find the link." Just one single, frictionless room.
Follow along as we keep building!

[Collab Space @collabspaceapp]

The Canvas Sync Layer:

We use Fabric.js on the frontend. But to keep drawing perfectly in sync without lag, we bypass standard HTTP polling entirely.

Instead, we multiplex the canvas state over low-latency WebRTC Data Channels. Sub-50ms sync. No lag.

[Collab Space @collabspaceapp]

Seamless ideation means your conversation and your whiteboard live in the exact same workspace.

Collab Space is a real-time meeting platform where your video and your shared whiteboard live in the exact same place.

Follow along for updates as we gear up for launch.